Annual Report and Accounts

Council and Standing Committees, 1975-1976

President: Dr R. E. Robinson.Vice-Presidents: Dr M. D. G. Salamon and P. A. von

Wielligh.Honorary Treasurer: J. K. E. Douglas.Immediate Past President: Prof. R. P. Plewman.

M embers of Oouncil:Dr M. G. Atmore, J. D. Austin, C. T. Fenton, J. A.

Holmes, P. Holz, Dr P. R. Jochens, Prof. R. P. King,Dr D. G. Krige, Dr D. 1. Legge, D. G. Malan, C. T.Shaw, D. A. Viljoen, R. A. von Maltitz, H. M. Wells.

Chairman, Witbank-Middelburg Branch: E. J. Jackson.Chairman, Orange Free State Branch: G. J. C. Young.Past Presidents Serving on Council: R. J. Adamson,

H. Britten, H. E. Cross, J. K. E. Douglas, R. C. J.Goode, Prof. D. D. Howat, Dr J. P. Hugo, D. M. Jamie-son, D. G. Maxwell, Dr J. T. McIntyre, V. C. Robinson,P. W. J. van Rensburg.

Seven Council meetings and five Executive Committeemeetings were held during the year, and the standing andsub-committees held fifty-five meetings.Standing Committee Chairmen

Membership, P. A. von Wielligh; Technical Pro-gramme-Metallurgy, D. A. Viljoen; Technical Pro-gramme-Mining, D. G. Malan; Vacation School-Metal-lurgy, Dr P. R. Jochens; Vacation School-Mining,H. M. Wells; Awards, Dr R. E. Robinson; Excursions,Dr D. I. Legge; Adjudicating, Dr R. E. Robinson;Constitution, Rules and Policy, Prof. R. P. PlewILan;Mines and Works, C. T. Shaw; Education, Prof. R. P.Plewman; Foundry Colloquia, Prof. D. D. Howat.

Representatives on Other Bodies

'Associated Scientific and Technical Societies:Members: Dr R. E. Robinson and Prof. R. P. Plew-

man.Alternates: P. A. von Wielligh and Dr M. D. G.

Salamon.Federation of Societies of Professional Engineers:

Members: J. K. E. Douglas and Prof. R. P. Plewman.Alternates: Dr R. E. Robinson and Dr M. D. G.

Salamon.FSPE Technicians Committee:

Member: D. M. Jamieson.FSPE Rationalziation Committee:

Member: Dr M. D. G. Salamon.South African Council for Professional Engineers (InstituteNominees):

Member: R. C. J. Goode.Alternate: G. H. Grange.

South African National Committee on Tunnelling:Member: D. G. Malan.

52

FOR THE YEAR ENDED 30th JUNE 1976

Alternate: Prof. R. P. Plewman.Engineers' Liaison Committee (Pretoria):

Member: Dr J. P. Hugo.Alternate: P. W. J. van Rensburg.

Government Certificate of Competency Liaison Oommittee:Member: Prof. R. P. Plewman.Alternate: D. M. Jamieson.

J ames M oir M ernorial Lectures:Member: Prof. D. D. Howat.

World Mining Oongress-N ational Oommittee:Members: Dr M. D. G. Salamon, Prof. R. P. Plewman,

and H. M. Wells.I.F.A.O. Symposium:

Member: P. W. J. van Rensburg (Chairman-Organ-ising Committee).

Alternate: Dr J. P. Hugo.I.U.P.A.O. Symposium:

Member: Dr P. R. Jochens.

Membership

Nine Fellows, twenty Members, six Associate Mem-bers, thirteen Graduates, nine Associates, twenty-nineStudents, and ten Company Affiliates were elected duringthe year. One Fellow was elected to Honorary LifeFellowship, eight Members and one Graduate weretransferred to Fellows, twelve Graduates and twoStudents were transferred to Members, three Studentswere transferred to Graduates, and one Student wastransferred to the grade of Associate. Six Fellows, twoMembers, and two Associates were admitted to retiredmembership. Nine Fellows, fifteen Members, threeGraduates, one Associate, two Students, and one Com-pany Affiliate resigned.

A statement of membership as at June 30th, 1976, andthe end of the previous year is shown in the followingtabulation.

Honorary Life Fellows. . . .Honorary FellowsLife Fellows ............Fellows .,..............Members ................Associate Members. . . . . .Graduates ..............Associates ,.Students ..............Company Mfiliates . . . . . .

30th June,1975

168

171549523

15132209173

71

1866

30th June,1976

178

171547517

21123205179

80

1878

Obituaries

Your Council records with deep regret the death duringthe year of the following members: P. A. Creewell, LifeFellow; A. S. Davis, J. S. Hay, P. O. Lange, N.

OCTOBER 1976 JOURNAL OF THE SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY

McCaskell, and H. G. M. McKerrow, Life Members;C. L. Berange, Fellow; T. Bulloch, G. Douglas, R. W.Forrester, and C. G. P. Sack, Members; P. R. Garcia,W. A. Naude, and J. P. Slager, Associates.

Finance

The annual accounts reveal that the finances are in ahealthy position. Once again income exceeded expendi-ture by R24 159 (last year R21 410). Revenue at R65 890showed a decline compared with last year (R71184)mainly owing to reduced income from the sale of publica-tions. The vacation schools held towards the end of 1975produced a surplus of R12 016.

An analysis of the costs, disregarding those of a non-recurrent nature, show that the net cost of running theInstitute rose from R33 155 to R41 731, an increase of26 per cent.

Revenue from subscriptions and interest on invest-ments amounted to R47 499 (last year R45 160), so thatmost of the surplus was derived from sources such asthe sale of publications and vacation schools. There isno certainty that this revenue can be repeated everyyear but, if it is, it should be utilized to further the aimsof the Institute in education.

The cost of administering the Institute should becovered by members' subscriptions, and Council willaccordingly have to give consideration to increasingthese in the year ahead.

Council has decided that, if possible, the capital offunds such as the Education Fund and the McArthurForrest Memorial Fund should be adjusted annually toallow for the effects of inflation on the value of money.Accordingly, amounts of R7500 and R733 were trans-ferred to the capital accounts of these funds during theyear. It is the intention to use only the interest on thecapital for financing the various projects, and to keepthe capital intact so that education can be a continuingproject.

The arrangements with Syfrets Trust have continuedsatisfactorily this year, and R92 609 is now invested ontheir advice in debentures and loans paying good interestrates. The balance of the funds are in more liquid formin building societies, banks, and on call at Syfrets Trust.

Education Fund

The Education Fund, now standing at R66 253, con-tinues to aid in the financing of projects concerningeducational activities. Eight delegates were sponsored tothe vacation schools during the past year; representa-tives were subsidized to attend the AS & TS Conferenceon 'Resources of Southern Africa-Today andTomorrow', and costs were borne for attendance at theseventh Conference on 'Training of Engineers' held byFSPE in Cape Town.

The Fund is committed to underwrite the cost ofseveral seminars, which it is intended should be held inCape Town, Johannesburg, and Natal. At these seminars,students in mining, metallurgy, and chemical engineeringwill be appraised of facts concerning their future in theminerals industry, and the period of post-graduatetraining prerequisite to registration as a ProfessionalEngineer.

The Fund will also be used to finance the prizes thatare to be presented to third-year students in the Depart-ments of Mining and Metallurgy at the Universities ofPretoria and Witwatersrand.

The Education Sub-committees continued theirattempts to recruit scholars and students to the mineralsindustry through various media, such as the press,periodicals, radio, and television. However, the mostsuccessful method of recruitment proved to be thePhoenix Programme, a full report of which appearsbelow.

Investigations were made during the year into thethe grievances aired by graduate engineers regardingtraining schemes, and steps are to be taken to alleviatethe situation to the mutual satisfaction of engineers-in-training, their employers, and SACPE.

The curriculae in mining and metallurgy at the Univer-sities of Pretoria and the Witwatersrand, and theWitwatersrand College for Advanced Technical Educa-tion, were reviewed.

Phoenix Programme

The Phoenix courses, which have played a significantrole in the recruitment of students into mining andmetallurgy, have continued under the auspices of theChamber of Mines.

Last year it was hoped to obtain sufficient additionalfinancial support from mining and metallurgical indus-tries outside the Chamber of Mines group of companiesto run the Phoenix courses on a national basis, and theInstitute undertook to establish a national committeeto manage the funds and to decide on policy mattersregarding these courses. Unfortunately, the support fromcompanies outside the Chamber of Mines did not atfirst attain the extent hoped for, only two companiesbeing prepared to make contributions. A further efforthas been made to obtain wider support with somemeasure of success, but in the meanwhile the Chamberof Mines has continued to bear the responsibility for thecontinuation of these courses. Council is still convincedthat these courses are a most effective way of informingteachers, and through them scholars, of the excitingemployment prospects in the mining and metallurgicalindustry, and the Institute will continue its support ofthis activity.

A vital component of these courses is the appointmentof a schools liaison officer to follow up the contacts madewith the teachers during the courses, and it is hoped thatan appointment will soon be made.

Journal

The following papers were published in Volume 76of the Journal of the South African Institute of Miningand Metallurgy.

August 1976The performance of the improved micro climate suit,

by N. B. Strydom, A. J. S. Benade, and W. H. van del'WaIt.

Suggested thermal stress limits for safe physiologicalstrain in underground environments, by J. M. Stewartand C. H. Wyndham.

JOURNAL OF THE SOUTH AFRICAN INSTITUTE Of MINING AND METALLURGY OCTOBER 1976 53

September 1976Electrolytic precipitation of ammonium diuranate, by

A. W. Bryson.A model for the leaching of non-porous particles, by

B. K. Loveday.The crystallization of rutile from titaniferous slags, by

R. A. H. Lycett, P. R. Jochens, and D. D. Howat.October 1976

Presidential address: The case for national research inmineral processing, by R. E. Robinson.November 1976

Notes on Iron Age copper smelting techniques, byH. M. Friede and R. H. Steel.

Ingot casting and wire drawing in Iron Age SouthernMrica, by R. H. Steel.

The industrial application of a uranium dioxideelectrode, by C. R. S. Needes, M. J. Nicol, N. P. Finkel-stein, and G. T. W. Ormrod.December 1976

Mining practice in the Kimberley Division of DeBeers Consolidated Mines Limited, by J. V. Cleasby,H. J. Wright, and M. T. Davies.

The improved rate of stope-face advance at Buffels-fontein Gold Mining Company Limited, by B. P. Christos.January 1976

Potential for the mechanization of stoping in goldmines, by N. C. Joughin.

Primary fracture from an array of shotholes, byC. M. Lownds and P. C. Seligman.February 1976

The use of face conveyors in gold mines, by N. C.Joughin and A. C. Buckmaster.

The development of drilling and blasting practice atPalabora Mining Company Limited, by C. C. Crosson,M. J. H. Tonking, and G. Patterson.March 1976

Design criteria and recent developments in large-capacity Wemco flotation cells, by P. Kind.

Rheological measurements on pulps from SouthMrican gold mines, by G. S. Hansford, C. D. Levy,and J. W. de Kock.

Note: The practical application of microclimatecooling in an underground stope in a gold mine, byC. H. Johannes, C. H. van Graan, N. B. Strydom, andJ. G. A. van Heerden.April 1976

The investment decision under uncertainty, by H. M.Wells.

Some basic considerations in the application of geo-statistics to the valuation of ore in South Mrican goldmines, by D. G. Krige.

The optimization of sample spacing in South Mricangold mines, by J. M. Rendu.May 1976

A kinetic study of the leaching of pentlandite in acidicferric sulphate solutions, by 1. J. Corrans and M. T.Scholtz.

A unique means of obtaining sea-water, by G. R. W.Walker.

The Metsep Process for the separation and recovery ofzinc, iron, and hydrochloric acid from spent pickle

liquors, by T. H. Tun1ey and T. D. Sampson.June 1976

The use of large 0 K-16 flotation machines at theconcentrators of Outokumpu Oy, by O. Korhonenand T. Leskinen.

The limitations of gold-mine evaluation, by P. R.Janisch.

Note: The development of AGITAIR flotationmachines, by J. P. Dreyer.

Note: A revised method of heat acclimatization, byN. B. Strydom, W. H. van der WaIt, P. L. Jooste, andH. F. Kotze.July 1976

Variation in air temperature in a cross section of anunderground airway by K. R. Vost.

Tin mining and smelting in the Transvaal during theIron Age, by H. M. Friede and R. H. Steel.

Note: Melting techniques in the iron foundry, by J. T.Davies.

Special Issue, October1976: Recent Advances in MineralDressing

Effect of automation on operational technology andworkers' opinions in concentrators, by Antti J. Niemi.

Apportionment of fine gold to source supply by meansof broken ore sampling, by P. Kraus.

Ore sorting according to electrical conductivity, byA. Balint.

New developments in high-tonnage photometric sort-ing, by M. A. Schapper.

The fracture and thermal weakening of quartzite inrelation to comminution, by A. Kanellopoulos andA. Ball.

Considerations in the application of autogenousmilling, by G. G. Stanley.

The 84-inch Gyradisc crusher, by W. F. de Lange.Automatic control of feed of autogenous grinding

media, by W. R. Flook.Large diameter tube mills, by R. D. Beck.Operating experience with ring ball mill grinding on

abrasive ore, by D. M. Meyer.Progress in the application of the Ring and Ball

Pulveriser to the mining and metallurgical industry, byD. A. Bullivant.

Developments in centrifugal milling, by A. A. Bradley,A. J. Freemantle, and P. J. D. Lloyd.

A peripheral discharge mill at Winkelhaak, by D. M.Pretorius.

Fine sizing in milling circuits, by S. K. de Kok.An evaluation of the Wallis Ultrasonic Separator for

fine screening, by N. D. Jagger and S. Fick.Full-scale testing of centrifuge separators for use in

slime tailings disposal, by 1. R. M. Chaston and C.Forsdyke.

Desliming techniques for tin slurries prior to flotation,by A. Buncombe.

The Reichert Cone gravity concentration pilot plant,by J. McLean.

Gravity recovery of fine tin using the Bartles Mozleyconcentrator, by L. M. Falcon.

Compound water cyclones as a means of fine coalcleaning, by S. Farinha.

54 OCTOBER 1976 JOURNAL OF THE SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY

New drum type heavy-media separator for SouthAfrica: Bretby Snail Separator, by W. D. Jacobs.

Some potential applications of wet high-intensitymagnetic separation, by W. T. N. Keleghan.

The application of magnetohydrostatic separation tometallurgical problems, by 1. J. Lin and N. P. Finkel-stein.

Potentialities of magnetohydrostatic separation usingsolutions of salts of rare earth elements, by U. T. Andres.

Selective flocculation of cassiterite, by E. A. Appleton,C. R. A. Clauss, and J. J. Vink.

An assessment of the efficiency of the Dryfio concen-trator by the use of specific gravity markers, by P. W.Overbeek.

The depression and deactivation of sphalerite, byS. Allison, P. J. Harris, and F. Marsicano.

The effects of froth height, aeration rate, and gasprecipitation on flotation, by J. A. Engelbrecht andE. T. Woodburn.

Oil-levitation extraction - a variation of flotation, byL. A. Goold, 1. J. Lin, V. M. Lovell, and N. P. Finkel-stein.

A method of reducing uncertainty in the estimationof flotation plant recovery, by E. M. Buchalter and C. E.Smith.

The beneficiation of residue at Blyvooruitzicht GoldMine, by G. D. Louw and P. A. Laxen.

Gold concentration by flotation, by S. K. de Kok.The use of an energy-dispersive X-ray spectrometer to

provide rapid analysis for flotation control, by O. R.Truby.

The influence of chemical environment during millingon the flotation of zinc from complex sulphide ores, byL. A. Bushell and M. L. Veitch.

Palabora Mining Company's gas scrubbing plant, byD. A. Edge and J. S. Adams.

The case for large flotation machines, by J. Prevett.Simulation of ore dressing plants, by R. P. King.A flexible mill control programme, by R. J. Adey.Progress in assessing plant operating data, by J. G.

Mackayand P. J. D. Lloyd.A quantitive model for mineral liberation, by R. P.

King.Circulation patterns in a pachuca, by D. F. van del'

Merwe and A. J. Swierstra.Commissioning of a process control computer at

Consolidated Diamond Mines, by A. R. Brimmer andC. D. Franklin.

Student Prizes

Prizes for the best student papers, written in part-fulfilment of the B.Sc. Engineering degree and submittedto the Institute for consideration, were awarded asfollows:

MiningAn investigation of longwall mining with particular

reference to its implementation at South Mrican collieriesas opposed to conventional mechanised bord and pillarmining, by R. G. Jurd.

Modern materials for underground support, by M.McChesney.

MetallurgyStress-corrosion studies on materials used for surgical

implants, by C. R. Thomas.The chlorination of a chalcopyrite concentrate, by

N. T. Sutherland.Simulation of ore dressing plants, orientated towards

computer simulation techniques, by N. C. Webb.

Gold and Silver MedalsPapers published in Volume 75 and the first part of

Volume 76 of the Institute's Journal were consideredeligible for an award by Council, as well as the paperswritten by members that appeared in the publicationINF AOON 74. (Proceedings of the First InternationalFerro-Alloys Congress).

The following awards were made.

Gold MedalsProf. D. D. Howat and Dr P. R. Jochens:for research work on fundamental aspects of the electricsmelting of ferro-alloys. The results of this work wereincorporated in four papers presented to the FirstInternational Congress on Ferro-Alloys (INFACON 74),which was held in Johannesburg in 1974, and publishedin the Proceedings of the Congress in 1975, the relevanttitles being:

Liquidus temperatures and the activities of manganese(11) oxide in slags associated with the production ofhigh-carbon ferromanganese alloys (written jointly withG. F. Warren)

A laboratory investigation of the smelting mechanismsassociated with the production of high-carbon ferro-chromium (written jointly with R. C. Urquhart)

Physicochemical properties of slags in the systemMgO-AI2Oa-SiO2 and their application to the technologyof ferro-alloy smelting (written jointly with G. H. John-ston)

The viscosities and electrical conductivities of slagsassociated with the production of high-carbon ferro-manganese alloys (written jointly with L. C. Woolacott)

The crystallization of rutile from titaniferous slags(written jointly with R. A. H. Lycett and published inVolume 76 of the Institute's Journal).Mr A. H. Mokken:in recognition of the ably conducted researches, faith-fully reported, that led to the technical breakthroughwith favourable economics of autogenous milling andthen of the peripheral discharge of pulp from cylindricalmills, with improved output, in the Union CorporationGroup. His constructive paper for the Base MetalsDivision in 1964 and his informative chapter in theProceedings of the Stainless Steel Symposium of September1969 gave further breadth to his technical contributions,to which is added the paper entitled:

A study of the arrangements for pulp discharge onpebble mills, and their influence on mill performance(written jointly with G. K. 1. Blendulf and G. J. C.Young).

Silver MedalsDr G. G. Stanley:for his paper entitled:

Mechanisms in the autogenous mill and their mathe-matical representation.

~Ql,IRNALOF THE SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY OCTOBER 1976 5!i

and his conclusive researches in Australia leading to thedevelopment of a comprehensive model, now confirmedto embrace South African conditions, for autogenousmilling.

Dr N. C. Joughin:for his paper entitled:

Improvements in stope drilling and blasting for deepgold mines (written jointly with A. J. A. White andN. G. W. Cook).

J. V. Cleasby and H. J. Wright:for their paper entitled:

Mining practice in the Kimberley Division of DeBeers Consolidated Mines Limited (written jointly withM. I. Davies).

Honorary Life FellowIn recognition of his many years service to the

Institute, Council unanimously elected to Honorary LifeFellowship: Mr R. H. McWilliam.

Excursions

Although petrol restrictions were less stringent duringthe past year, Council nevertheless decided to limit thenumber of excursions. Thus, only one was held - onApril 7th, 1976, to NUFCOR Works and the GoldFields Training School at Luipaardsvlei.

The Institute is grateful for the co-operation receivedfrom the above organizations in the arrangements forthis excursion.

Mining Colloquium

A mining colloquium was held on November 19th,1975, the subject being 'Valuation'. It was attended by138 delegates, and the following papers were presented.

An attempt to solve the problem of optimization ofsample spacing in South Mrican gold mines, by J. M.Rendu, Anglo-Transvaal Consolidated Investment Corp.Limited.

Some basic considerations in the application of geo-statistics to gold ore vah,lation, by D. G. Krige, Anglo-Transvaal Consolidated Investment Corp. Limited.

An introduction to geostatistical methods of mineralevaluation, by J. M. Rendu, Anglo-Transvaal Consoli-dated Investment Corp. Limited.

The investment decision under uncertainty, by H. M.Wells, University of the Witwatersrand.

The limitations of gold mining evaluation, by P. R.Janisch, Gold Fields of SA Limited.

The next colloquium is to be held on November 17th,1976, on the topic "Clarification, pumping, settling andtreatment of underground water'.

Metallurgical Colloquia

Three well. attended colloquia were held during theyear under review. On September 17th and 18th, 1975,a Symposium entitled 'Forty-nine steps in mineraldressing' was held jointly with the National Institutefor Metallurgy, the venue being the Rand AfrikaansUniversity. The Symposium adopted a novel approachof presentation in that a. large number of fairly shortpapers were delivered, ensuring a wide and up-to-date

51 OCTOBER 1916 .JOURNAL. Of THE SOUTH AFRICAN INSTITUTE OF MININ(; AND METAI-I-!JR(;Y

review of significant recent developments in the fieldof mineral dressing. The Symposium attracted overthree-hundred delegates, including several from over-seas. The guest lecturer, Prof. A. Niemi, a worldauthority on the control and automation of flotationplants, from the Helsinki University of Technology,delivered a paper entitled: The effect of automation onoperational technology and workers opinions in concen-trators. The balance of the papers were presented underfive main headings:

Sorting and SamplingComminution and ClassificationConcentrationFlotationAutomation and Modelling.

During October 1975, a colloquium entitled 'Newtechniques in the foundry industry' was arranged inconjunction with the Imtitute of Foundrymen and theInstitution of Metallurgists. This meeting was wellattended, and it is hoped that it will prove the fore-runner of several combined colloquia of major interest tometallurgists engaged in metal-processing operations.The following papers were presented:

The foundry industry in South Mrica, by J. Steele,F. W. P. Journal.

Core and mould making processes, by K. Campbell,Foseco S.A. (Pty) Limited.

Scabbing tests in foundry practice, by H. Fidos,C.S.I.R.

Centrifugal casting of heat resisting tubes, by K.Armitage, Metallurgical Processing Limited.

Costing in the foundry industry, by M. Postma,T.M.F. (Pty) Limited.

Different melting techniques in the iron foundry, byJ. Davies, Ferrovorm Limited.

Outstanding liner life in crushing and milling opera-tions with reinforced Nihard - a combination of hard-ness and toughness, by P. Ageland, Brown-BoveriLimited.

Dr P. R. Beeley, Senior Lecturer in the Department ofMetallurgy, University of Leeds, who was guest lecturerat the colloquium, delivered a paper entitled: Metalfounding - a modern perspective.

The following organizations contributed to theFoundry Trust Fund:

Arlabs (Pty) Ltd; Cullinan Holdings Limited; EclipseEngineering Limited; Foseco S.A. (Pty) Limited;J ames Brown and Hamer Limited; Industrial Ironand Steel Works (Pty) Limited; Light Castings (Pty)Limited; Scaw Metals Limited; Standard Brass, Ironand Steel Foundries Limited; The Union Steel Corp.of S.A. Limited; Vecor Heavy Engineering Limited;Vereeniging Refractories Limited.

On March 17th, 1976, a colloquium was held at KelvinHouse on the topic 'New advances in non-ferrous pyro-metallurgy', at which the following papers werepresented:

Smelter ancillary and sulphuric acid manufacture atImpala Platinum Limited, by R. P. Plasket and D. A.Ireland, Impala Platinum Limited.

Oxygen enrichment of the convertor air at Rustenburg

Platinum Mines, by J. E. Forbes, Rustenburg PlatinumMines Limited.

Power requirements for smelting a copper-nickelsulphide concentrate in a 7,5 MV A electric smel1ingfurnace, by H. E. Bartlett and P. Markham, WesternPlatinum Limited.

Control systems for submerged arc smelting furnaces,by J. Kemp, Barnes-Birlec Limited.

Tin smelting at Iscor-Vanderbijlpark, by H. A. Uys,Iscor.

Treatment of zinc silicates by the Waelz process, byJ. E. Clay and G. P. Schoonraad, Kiln Products Limited.

Again, the meeting was well attended, generating agreat deal of discussion from the floor.

A meeting dealing with 'Electrometallurgy' will beheld later in the year, while 'Metal problems in mineralprocessing and metallurgical utilization of coal', and'Metallurgical aspects of nuclear power stations' willbe subjects for colloquia during 1977.

Vacation School - Metallurgy

A Vacation School, 'Hydrometallurgy-theory andpractice', was conducted at the University of the Wit-watersrand from 9th to 13th August, 1976. The twooverseas lecturers were Professors E. Peters and 1. H.Warren, of the Department of Metallurgy, University ofBritish Columbia. These two eminent lecturers are wellknown for their contributions in the field of hydro-metallurgy, and in 1972 presented the 'First TutorialSymposium on Hydrometallurgy' sponsored by theExtractive Metallurgy Institute of the Colorado Schoolof Mines, the University of Denver, and AIME. Dr E.Barnea, 1.M.1. Institute for Research and Development,Haifa (at present on sabbatical leave at NIM) was alsoa lecturer. Seven local lecturers participated in thecourse: Dr A. W. Bryson, Senior Lecturer, Departmentof Chemical Engineering, University of the Witwaters-rand; Mr F. L. D. Cloete, Senior Chief Research Officer,Chemical Engineering Research, CSIR; Dr D. W.Boydell, Head-Raw Materials Sub-Division, ExtractionMetallurgy, Atomic Energy Board; Dr R. D. Hancock,Chief Scientist, Mineral and Process Chemistry Division,NIM; Dr P. Laxen, Chief Scientist, Process Develop-ment Division, NIM; Dr D. I. Legge, Consultant Chemi-cal Engineer, Anglo-Transvaal Consolidated InvestmentCo. Limited; Dr M. J. Nicol, Chief Scientist, Mineral andProcess Chemistry Division, NIM.

The major topics of this School were as follows:The fundamental aspects of hydrometallurgy includingmetal ions in solution, oxidation state diagrams, redoxsystems, electrochemistry, theory of leaching, andchemistry of solvent extraction and ion exchange.Engineering aspects of hydrometallurgy, includingleaching practices, liquid-solids separation, hydrolysis,ion exchange practices, solvent extraction practices,metal displacement reactions and electrowinning.Flowsheets incorporating the information presented inthe previous two items with particular reference toconventional gold and uranium flowsheets, present andfuture developments in gold and uranium flowsheets,conventional flowsheets in copper and nickel hydro-metallurgy and specialized flowsheets.

This School was well received and was attended byseventy-one delegates, four of whom were guests of theInstitute's Education Fund. A questionnaire was sentto all the members of the Imtitute to ascertain the wishesof the members in regard to suitable topics for VacationSchools. The most popular topic was 'Hydrometallurgy'which was offered in 1976. 'Fundamental design ofequipment and flow-sheeting of ore dressing plants' and'Grinding and classification' were the next two topicsrequested most often, closely followed by 'Computerassisted optimization, simulation, and control of mineralprocess'. The topic of the Vacation School will be'Grinding' in 1977 and one of the other popular topicsin 1978.

Vacation Schools - Mining

The subject of this year's Vacation Schools was'The use of rock mechanics principles in practicalunderground mine design', which was held at theUniversity of the Witwatersrand during July andAugust. Because of the popularity of this School, it wasdecided to hold two consecutive Schools on the samesubject. Seventy-nine delegates attended the Schools,and the lectures were delivered by eminent SouthAfrican authorities in the field of rock mechanics. Theseincluded Prof. S. Budavari, Professor of Rock Mechanics,University of the Witwatersrand; Mr R. C. MoreO'Ferrall, Manager, Technical Services, General Miningand Fimtnce Corp. Limited; Mr W. D. Ortlepp, GroupRock Mechanics Engineer, Rand Mines Limited; DrS. .r. Patchet, Head, Rock Mechanics Department,Anglo American Corporation of S.A. Ltd; Dr M. D. G.Salamon, Research Advisor, Chamber of Mines of S.A.;Dr H. Wagner, Assistant Director, Mining OperationLaboratory (Gold), Chamber of Mines of S.A.; andDr P. P. Venter, Assistant Consulting Geologist, AngloTransvaal Consolidated Investment CorporationLimited.

The following topics were covered during the School:

Fundamental principles of solid mechanicsMechanical properties of rocks and rock massesResponse of the rock mass to underground excavationsStresses and displacements induced by mining tabular

depositsSelection and design of tunnel supportsPrinciples of the support of production excavationsProtection of service excavations and shaftsDesign of the layout of tabular excavationsPillar load and stabilityControl of rockburst hazards.

Pyrometallurgical Discussion GroupDuring the year, the Pyrometallurgical Discussion

Group, under the convenor, Dr J. B. See, held fourmeetings. The Group meets informally to exchangeviews on topics of mutual interest within the field ofpyrometallurgy. One or two short introductory lecturesare usually presented, followed by general discussion.

The topics covered in recent months were as follows:Aspects of tin smelting, by F. Shaw, National Institutefor Metallurgy

JOURNAL OF THE SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY OCTOBER 1976 57

Direct reduction and its future in steel making, byT. B. Beeton, IscorOxygen enrichment at Rustenburg, by J. Forbes,Rustenburg Platinum Mines LimitedExperience with an unusual technology for the processingof sponge iron in the electric arc furnace, by K. Schermer,Dunswart Iron and Steel WorksFerro-alloys in Brazil, by J. B. See, National Institute forMetallurgySelection of raw materials and high-temperaturephenomena in a calcium carbonate furnace, by P. F.Bolt, Sentrachem Limited

The effect of magnitude of scale on various operatingcharacteristics in the production of high-carbon ferro-manganese in electric smelting furnaces, by W. Gericke,Metalloys LimitedThe nature and behaviour of chromium in stainlesssteelmaking slags, by W. J. Rankin, National Institutefor Metallurgy.

Base Metals Discussion Group

Two meetings of the Base Metals Discussion Groupwere held during the year, organized by the Groupconvenor, Dr A. K. Haines. Subjects for discussion inthe first meeting were:Recent developments in electrowinning with particularreference to the plating of ferro-alloys and the use offixed-bed particulate anodes, by J. P. Martin, NationalInstitute for MetallurgyLaboratory testing and scale-up in dump leaching ofcopper ores, by R. J. Roman, New Mexico Bureau ofMines and Mineral Resources.

It was found that the interests of this Group over-lapped to a large extent with those of the PachucaGroup of the South African Chemical Institute. Thus,it was considered worth while to organize joint meetingsof the two Groups. The first of these meetings, held inOctober 1975, covered the following topics:Fundamental aspects of selective flotation of copper andzinc ores, by P. Harris, National Institute for Metal-lurgyCopper-zinc separation with special reference to PrieskaCopper Mines Ltd, by P. Marais, Anglo-TransvaalConsolidated Investment Corp. Limited.

James Moir Memorial LectureThe Annual James Moir Memorial Lecture was

delivered on October 22nd, 1975, by Mr L. H. Stein ofAE & er Limited, entitled 'Explosives today'.

ACHEMA TourOn June 17th, 1976, a group of twenty-one post-

graduate students of all races in mining, metallurgicaland chemical engineering, chemistry and applied andindustrial chemistry, left on a study tour to theACHEMA Conference in the Federal Republic ofGermany, which the Institute co-sponsored together withChemsa, Dechema, the Chamber of Mines, and variousother organizations. Under the leadership of Prof. N. J.Louw, Stellenbosch University, and Mr R. Wood,National Institute for Metallurgy, the students attended

58 OCTOBER 1976 JOURNAL OF THE SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY

the ACHEMA Conference, and visited mines, metal-lurgical processing establishments, chemical industries,and research centres in Germany. The aim of the tourwas to give the students an opportunity of improvingtheir professional outlook by exposing them to thelatest developments and techniques used overseas.

IF AC SymposiumThe Second IFAC Symposium on 'Automation in

Mining, Mineral and Metal Processing', is to be held inJohannesburg from September 13th to 17th, 1976. Itis being sponsored by the Technical Committee onApplication of the International Federation of AutomaticControl, and is being organized by the S.A. Councilfor Automation and Computation in co-operation withother technical bodies, including the Institute. Severalmembers of the Institute are represented on theorganizing committee, which is under the Chairmanshipof Mr P. W. J. van Rensburg.

IUP AC Symposium

The international IUPAC Symposium, on 'AnalyticalChemistry in the Exploration, Mining and Processing ofMaterials', held under the auspices of the Inter-national Union of Pure and Applied Chemistry, is beingorganized by the CSIR in association with severalSouth African organizations and the Institute. It isbeing held at the Rand Afrikaans University, Johannes-burg, from August 23rd to 27th, 1976. The Symposiumwill highlight the role of analytical chemistry in theexploration of raw materials, in their beneficiation andrefining, and in production.

World Mining Congress

At the request of the International Organizing Com-mittee of World Mining Congresses, it was thoughtappropriate during the year to establish the SouthAfrican National Committee under the aegis of theInstitute. The Committee includes representatives fromthe universities, industry, the Chamber of Mines, andthe Government Mining Engineer's Department, andis under the Chairmanship of Dr H. Denkhaus of theCSIR.

The Associated Scientific and Technical Societiesof South Africa

The Institute, through its representatives (on theControlling Executive) continues to take an activeinterest in the activities of the AS & TS. The conferenceon 'The resources of Southern Africa' was perhaps thehighlight of the year's activities and, although theattendance was not as high as was hoped, it was generallyagreed to be a success.

The continued efforts of the AS & TS in promotingactivities in other centres is a most important functionthat we hope will continue to receive the financialsupport of members by way of contributions to theAS & TS Trust Fund.

South African Council for Professional EngineersApplications for registration continued at a high

level during the year, and more than 8000 professionalengineers have been registered, the majority withoutbeing legally required to do so. Some 1700 engineers-in-training are now registered, and this represents themajor portion of the 600 or more engineers graduatingeach year.

It is important that graduates should register earlyso that they keep abreast of the requirements of thepractical training that has to be completed prior totheir acceptance for registration as professional engineers.Requirements for the training programmes are set outin SACPE Policy Statement No. 1/2, but amendmentsare made from time to time and graduates must, intheir own interest, ensure that the programmes they arefollowing will be acceptable. Contact should also bemaintained with this Institute, whose representativesliaise with employers regarding training programmes.

During the year, SACPE, in consultation with theFederation of Societies of Professional Engineers(FSPE) and with the Joint Council of Scientific Societies,investigated the possibility of extending registration toinclude, as engineering scientists, the scientificallytrained people working closely with engineers. Inaddition, there are other categories of personnel inengineering who have expressed a desire to register.These are, firstly, engineers with qualifications equivalentto Part 2 of SACPE's examinations; secondly, thosewho are holders of South African certificates of com-petency; and, thirdly, engineering technicians. Consider-able information, much of it from overseas, is beinganalysed, and much progress has been made. It is hopedby SACPE that some positive steps towards differentcategories of registration together with a rationalizationof engineering manpower in the Republic can soon betaken.

Further reviews of the educational standards neces-sary for registration as professional engineers have beencompleted, and it is noted that the constituent societieswithin FSPE re-affirmed that the present standard ofthe four-year South African baccalaureate in engineering,or its equivalent, be maintained. It should be notedthat the British three-year honours degree in engineeringhas been acceptable to date, but not the ordinary orpass degree. In future, from a date still to be determined,third-class honours degrees from British universitieswill not be recognized.

Amended Information Documents No. El/l (explain-ing possible ways of complying with the requirementsfor registration), E 2 (listing the examinations recog-nized by SACPE), and INF 3 (giving the presentconstitution and functions of the professional engineers'organizations in the Republic) were published duringthe year by SACPE and are available from the Registrar.

The Federation of Societies of ProfessionalEngineers

The Institute was represented on the board of FSPEby two Council members, Mr J. K. E. Douglas and Prof.R. P. Plewman, with Drs R. E. Robinson and M. D. G.Salamon as alternates.

Further attention was given to the subject of recogni-tion to personnel in the field of engineering who do not

comply with the requirements for registration as pro.fessional engincers. The recommendation was made thatsuch persons should be registered in their differentcategories, and that separate registration boards shouldbe set up for this purpose. Council has expressed thefear that such an arrangement may establish a bureau-cratic structure that this country can ill afford, and maycreate numerous complex problems involving manyman-hours of debate and effort by senior engineerswho are already heavily committed. Council wouldalso like to see a more precise definition of the objects ofsuch registration, how it would operate, and whatwork would be permissible under such registration.

In connection with these proposals, considerationshould perhaps be given to the introduction of gradesof membership in the various Institutes to cater forall categories of the engineering profession and therebyprovide these people with the status they require. Therecommendations of the Seventh Conference onEngineers in Training, which was held in July 1975,have either been implemented or are being processed.The findings of the Conference are available to thoseinterested and will shortly be published in theProfessional Engineers Journal, which has undertakento publicize the activities of FSPE and to deal withmatters of common concern to the engineering profession.Copies of this journal are being distributed to corporatemembers of all Institutes and to professional engineers.

A conference on 'Engineering education' is beingplanned, and this will be held in Durban in September1977.

Attention is being given to the possible rationalizationof the activities of the various engineering institutes,particularly the formation of a common publIshing andeditorial body for the various journals. At this stage,your Council has reservations about whether an equiva-lent service can be provided without additional cost.Also, Council is adamant that, whatever arrangementsare made, the character, status, and high standards ofthe SA/MM Journal must be maintained.

FSPE also dealt with various proposed amendmentsto the Professional Engineers' Act, and its views haveensured that these amendments are in the best interestsof the engineering profession.

The Publicity Sub-committee of FSPE has beenactive, giving particular attention to career guidance andrecruitment. These activities complement those of thisInstitute's Education Committee, who have also beenvery active in these matters.

FSPE continued to collaborate closely with the S.A.Council for Professional Engineers (SACPE) and withgovernment and public authorities in all matters relatingto the profession of engineering. Contact was maintainedwith international organizations such as The WorldFederation of Engineering Organisation (WFEO) andthe Commonwealth Engineering Council (CEC).

Council considers that FSPE does useful work inmatters relating to the engineering profession as a whole.However, there is a danger that its functions willencroach on those of this Institute, which is best quali-fied to handle matters directly related to the miningand metallurgical profession. The Institute's representa-

JOURNAL OF THE SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY OCTOBER 1976 59

tion on the board of FSPE is most necessary to ensurethat the efforts are complementary.

South African National Committee on Tunnellin~

The Constitution was finalized during the year, thuscompleting all the formative steps.

A study was made of the Mines and Works Act, andproposals for a number of amendments are to be putforward.

A directory of research organizations was drawn up,and the collecting of data on the demand for tUlUlellingcontinued.

Contract practices in civil engineering tUIUlels werestudied, and SANCOT is represented on the internationalworking group concerned with the contractual sharingof risks.

SANCOT has identified a number of subjects to whichresearch efforts in South Mrica should be directed, andhas been given the distinction of leading an internationalworking group on Safety in Tunnelling.

South African T~lnnelling was launched during theyear as the official organ of SANCOT.

Oran~e Free State BranchCommittee

G. J. C. Young (Chairman), A. N. Shand (Vice-Chair-man), D. A. Smith (Immediate Past Chairman), R. R.Perkin (Honorary Secretary), and E. J. Dominy, B. J.Drysdale, H. M. W. Eschenberg, A. 1. Lewis, Z. J.Lombard, and E. T. Wilson.

Because of their transfer to Johannesburg, Mr Perkinand Mr Wilson were obliged to resign from the Com-mittee. The Chairman wishes to record the appreciationof the Branch for the sterling work performed by boththese gentlemen. Mr Wilson served as Chairman of theCommittee for the year 1973/1974, Mr Perkin as Hon-orary Secretary from March 1974. Following Mr Perkins'resignation, the position of Honorary Secretary wasfilled by Mr A. R. Godfrey.

MeetingsFour general meetings were held during the course of

the year, with an average of attendance of 39. It isinteresting to note that visitors represented some 40per cent of the total attendance. Three Committeemeetings were also held, and the Chairman wishes torecord his appreciation of the assistance given him bythe Committee.

Presentations during the year included the following:Training of Mining Engineers, by Prof. R. P. PlewmanTalk on the Commonwealth Mining and MetallurgyCongress, 1974, by E. J. DomineyApportionment of fine gold to source supply by meansof broken ore sampling, by P. Kraus.A presentation by TEXAS NUCLEAR on the uses ofnuclear instrumentation in industry, by J. W. Tongs andJ. G. Barnard.Coal gatherer-FilmNorthern mining territory-FilmUnder-sea mining at CDM-Film.

A party of twelve members visited the Vecor plantat Vanderbijlpark on 12th May, 1976. This proved to be

60 OCTOBER 1976 JOURNAL OF THE SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY

a very well-organized affair, which afforded members theopportunity of witnessing this complex operation. Thehosts on this occasion spared no effort in ensuring thatmembers enjoyed a most satisfying outing, and theBranch is most grateful for their generosity.

At this juncture it would be fitting to record theBranch's gratitude to those mining and commercialconcerns who have, by their generosity, made meetingsand visits both possible and enjoyable.Membership

The total membership of the O.F.S. Branch, as at 10thJune, 1976, was 126, made up as follows:

Fellows...............Members .............Associates .............Graduates .............Students ..........

FinanceThe Branch incurred no expenses during the year. A

banking account is not operated locally.General

With the concurrence of Council, it was agreed thatthe Branch extend its field of operation to include theKlerksdorp area. Thus, all members in that area willin future receive notices of Branch meetings, and it ishoped that in due course members from that regionwill be elected to the Committee.

184341

915

Witbank-Middelbur~ BranchCommittee

E. J. Jackson (Chairman), V. Crowder (Vice-Chairman), B. T. Hosking (Immediate Past-Chairman),C. Bird (Honorary Secretary), and K. Schliecher, 1.Wilmot, A. N. Melvill, A. W. Brereton, W. Weber, andA. N. Turner.Meetings

On February 13th, 1976, an address was delivered byMr A. N. Melvill on his impressions of the Canadianmining and metallurgical industries. A one-day sym-posium was held on June 18th, 1976, covering topicsrelated to coal mining, with special reference to research,transportation, and reserve estimation. Thanks are dueto Highveld Steel and Vanadium Corporation for theuse of their Recreation Club and its facilities on thatoccasion.

The Annual General Meeting was held at the BoulevardHotel, Wit bank, on July 30th, 1976. This took the formof a supper, and Dr R. E. Robinson, President of theInstitute, delivered a short address.

Four Committee meetings were held during the year,and all were fairly well attended. It is gratifying to notethat there is evidence of the Branch's re-vitalization.

At present, plans are under discussion to organize atwo-day colloquium in the Wit bank area during thefirst half of 1977.Finance

All the activities were self-financing, the only outgoingmonies being for stationery.

Honorary ServicesAppreciation is recorded for the services of the Honor-

ary Legal Advisers, Messrs van Hulsteyn-Douglas, and

the Council is most grateful for the invaluable assistancegiven to the Institute by the Honorary Treasurer, MrJ. K. E. Douglas.

The organization of the many and varied functions ofthe Institute demands much time and effort on the partof the Committees and their Chairmen, and gratitudeis expressed to these persons for their unstinting co-operation during the past year.

Secretariat

The Institute wishes to express its gratitude to theAssociated Scientific and Technical Societies for theservices rendered during the past year. In particular,thanks are due to Mr E. Boden, Manager, Mr D. S.Trueman, Assistant Manager, Miss J. Theron, Secretary,and her assistants Miss R. Harrison and Mrs W. Rose.

Company Affiliates

The following members have beenadmitted to the Institute as Com-pany Affiliates.

AE & Cl Limited.Afrox/Dowson and Dobson Limited.Amalgamated Collieries ofS.A. limit-

ed.Apex Mines limited.Associated Manganese Mines of S.A.

Limited.Billiton Exploration SA (Pty)

Limited.Blackwood Hodge (S.A.) limited.Blyvoorultzicht G.M. Co. Ltd.Boart International limitedBracken Mines limited.Buffelsfontein G.M. Co. limited.Cape Asbestos South Africa (Pty) Ltd.Compair S.A. (Pty) limited.Consolidated Murchison (Tvl) Gold-

fields & Development Co. limited.

Deelkraal Gold Mining Co. Ltd.Doornfontein G.M. Co. limited.Durban Roodepoort Deep '..Imited.

East Drlefonteln G.M. Co. limited.East Rand Prop. Mines limited.Engineering Management Services

(Pty) Ltd.Envirotech (Pty) Ltd.Free State Saaiplaas G.M. Co. limited.Fraser & Chalmers S.A. (Pty) limited.

Gardner-Denver Co. Africa (Pty) Ltd.Goldfields of S.A. Limited.The Grootvlel (Pty) Mines limited.Harmony Gold Mining Co. limited.Hartebeesfontein G.M. Co. limited.Highveld Steel and Vanadium Corpo-

ration limited.Hubert Davles Heavy Equipment(Pty) LtdImpala Platinum limited.Ingersoll Rand Co. S.A. (Pty) Ltd.Johannesburg Consolidated Invest-

ment Corp. Ltd.Kinross Mines limited.Kloof Gold Mining Co. limited.Lennings Holdings limited.Leslie G.M. limited.Libanon G.M. Co. Limited.Lonrho S.A. limited.Loralne Gold Mines limited.Marievale Consolidated Mines limitedMatte Smelters (Pty) limited.Natal Cambrian Collieries Limited.Northern Lime Co. limited.O'oklep Copper Company Limited.Otjihase Mining Co. (Pty) Limited.Palabora Mining Co. limited.Photometric Sorters.Placer Development S.A. (Pty) Ltd.President Stern G.M. Co. limited.Pretoria Portland Cement Co. limit-

ed.Prieska Copper Mines (Pty) limited.Rand Mines limited.

R. J. Spargo limitedRoolberg Minerals Development Co.

limited.Rustenburg Platinum Mines limited

(Union Section).Rustenburg Platinum Mines limited

(Rustenburg Section).St. Helena Gold Mines limited.Shaft Sinkers (Pty) limited.S.A. Land Exploration Co. limited.Stilfontein G.M. Co. limited.The Grlqualand Exploration and FI-

nance Co. limited.The Messlna (Transvaal) Develop-

ment Co. limited.The Randfontein Estates Gold Mining

Co.Witwatersrand Ltd.The Robbins Co. (Africa) (Pty) Ltd.The Steel Engineering Co. Ltd.Trans-Natal Coal Corporation lIm Ic-

ed.Tvl Cons. Land & Exploration Co.Tsumeb Corporation limited.Union Corporation limited.Vaal Reefs Exploration & Mining Co.

limited.Venters post G.M. Co. limited.Vergenoeg Mining Co. (Pty) limited.Vlakfonteln G.M. Co. limited.Welkom Gold Mining Co. limited.West Drlefonteln G.M. Co. limited.Western Areas Gold Mining Co. Ltd.Western Deep Levels limited.Western Holdings limited.Wlnkelhaak Mines limited.

JOURNAL OF THE SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY OCTOBER 1976 81

TItE SOUTH AFRICAN ISTITUTE OF MINING AND METALLURGY

Balaucc Sheet at 30th June, 1976.

5317520

26848

58531

Ld20 000

3853121410

1050

1050

3262520 000

4775

574001409

4849

440

5289400

1975R

R154556

RCURRENT LIABILITIES

CREDITORS.. . . .. .. . . .. . . . . . . . . ..SUBSCRIPTIONS RECEIVED IN AD-

VANCE "REGISTRATION FEES FOR JUNE-

JULY 1975 VACATION SCHOOL..

32685ACCUMULATED FUNDS

Balance at 30 June 1975 . . . . . . . . . .Less: Transfer to Education Fund..Transfer to MacArthur Forrest

MemorialFund"""""""

Add: Excess of income over expendi-ture for the year ended 30June 1976

59941

92626FOUNDRY TRUST FUND, as per

contraBalance at 30 June 1975

"'". . . ..

Add:Donations..................Interest.. .. .. .. .. .. .. .. .. .. ..Colloquia income.. . . . . .. .. .. . . . .

1976R

9859

1062

10921

59941f75OOlI 733 I

8233

51708

24159

75 867

86788

1050400

101510

29702306

559917500

9025776

701693916

66253

4889

733509

6131250

RIS9 586

ASSOCIATED SCIENTIFIC AND TECHNICALSOCIETIES OF SOUTH AFRICAPer D. S. TRUEMAN Secretaries.

R

12 164

2053631550

64250

fIO5OlI 533 \

1583

664

9671

11 725

5881

1050

6086

29176

1720 179

55458(533)

20002

1700

498697

1975R

1530

202223

19302051

693

591

RCURRENT ASSETS

CASH-current account. . . . . . . . . . . . . .on fixed deposit includingaccrued interest

"""""""-at call ,........

1976R

2263

20 53417276

40 073

8392287

12

6146617

22624

13000

5999

11 71428 386

17

20179

6629542

1905

5911811

21700

6009128

R

40 073

10369258

1I

260195

85

42

128

51152

35 625

9

86788

664

664

66253

5881

RI59 586

To the members,THE SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY.

We have examined the attached balance sheet and income and expenditure account. In our opinion they fairly present the financial position of the institute at 30thJune 1976 and its income and expenditure for the year ended on that date.

ALEX. AIKEN & CARTER,Chartered Accountants (S.A.), Auditors.

&3

Less: Colloquia expenditure

1050EDUCATION FUND, as per contra

Balance at 30 June 1975 . . . . . . . . . .Transfer ftom accumulated funds. .

Add: Gain on redemption of invest-ment

""""""""""""Interest and dividends received....

Less: Expenses ..................

55991MACARTHUR FORREST MEMOR-

IAL FUND, as per contraBalance at 30 June 1975 . . . . . . . . . .

Add: Transfer from accumulatedfunds ..

Interest received. .. .. .. .. .. .. .. .

Less: Awards ,

4889

OCTOBER 1976 JOURNAL OFTHESOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY

Less: Applicable to Foundry TrustFund ,

EducationFund",,""""""

62667DEBTORS

Debtors for sales of journal andpublications, less provision. . . . . .

Advertisersinjournal..............Witbank-Middelburg branch. . . . . .

August 1976 (l975-June-July)Vacation School <:xpensesto date. . ..Sundry..........................

7556STOCK-ties at cost

""""""""-journals at nominal value. . . .-publications at nominal value

29011

292195 DEPOSITS........................92 SUBSCRIPTIONS IN ARREAR, less

provision.. .. .. .. .. .. .. .. .. .. 00..- AMOUNT DUE FROM EDUCATION

FUND"""""""""""""97 AMOUNT DUE FROM MACARTHUR

FORREST MEMORIAL FUND. . . .

70899INVESTMENTS

QUOTED SHARES AND DE-BENTURES """""""

(market value R21 402: 1975-R7 133)UNQUOTEDSHARES

""""""LOANS AND UNQUOTED DEBEN-TURES

","""""""""'"21 396

329MEDALS

At cost. . . . . . . . . . . . . . . . . . . . . . . . . .FURNITURE

At cost less depreciation. . . . . . . . . . . .DIES

At cost less depreciation. . . . . . . . . . . .

92626FOUNDRY TRUST FUND INVEST-

MENT, as per contraBUILDING SOCIETY SAVINGS

ACCOUNT ,..........Add: Amount due from general fund. .

1050EDUCATION FUNDS INVESTMENT-

MENTS, as per contraR6173 8% DURBAN LOCAL

REGISTERED STOCK 1995. ."

. .BUILDING SOCIETY SAVINGS

ACCOUNT. .. . .. .. .. .. .. .. .. . .QUOTED DEBENTURES. . . . . . . . . .

(market value R25 854: 1975: R23 851)UNQUOTED SHARES. . . . . . . . . . . .

UNQUOTED DEBENTURES ANDLOANS .

Less: Amount due to general fund. ...55991

MACARTHUR FOR REST MEMOR-IAL FUND INVESTMENTS, as per contra

BUILDING SOCIETY SAVINGSACCOUNT

""""""""""R600 6t% ELECTRICITY SUPPLYCOMMISSION LOCAL REGIS-TERED STOCK-1989/91 . . . . . .

LOAN"""""""""""""UNQUOTEDSHARES

""""""PARTICIPATION BONDS .. ......

Less: Amount due to general fund....

4889

~

J. K. E. DOUGLAS Hon. Treasurer

1976

R R

24686225

225

1611

275

200

2086177

3001066

32023414192

209463685

THE SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY

Income and Expenditure Account for the Year ended 30th June, 1976.

183153083

21 398

~9138706

~17 533

1975

R R

24631

5604

I

9595

3094

18293

6338

24159

R65890 R65 890

975

R2458014 000

6275963

13 6441316

10654400

1976

R25 39214000

50376045604

77112016

225175

Secretarial fee and overhead charge-Associated Scientific and Technical

19278 Societies of South Africa"""""Auditfee-1976 ,..

-Adjustment for prior years. .

Subscriptions ,.Companyaffiliatessubscriptions ,.Entrancefees "Interest and dividends received ""'" , ,.Surplus on sale of publications...

"Symposia and colloquia ,.Vacation School....................................Transfer from provision for doubtful subscriptions. . .. :

NOTE: Voluntary contributions by members amountingto RI 362 were collected and paid over by theInstitute to the A.S. & T.S. Trust and are notincluded in the income statement

R71 184

400Contributions-

Federation of Societies of ProfessionalEngineers.. . .. .. .. .. . .. .. . .. .. .

Council of Commonwealth Mining andMetallurgical Institutions. . . . . . . .

South African National Committee onTunnelling......................

In accordance with Bye-Law 7.6.1 of the Constitution,the following names have been removed from themembership roll owing to non-payment of subscriptionfees:

Fellows: G. J. J. Haumann, K. B. R. Honeth, H. J.van der Wal, M. G. Wilson.

Members: R. K. Drake, A. T. Fisher, N. J. Grobler,.J. K. Heywood, T. S. Schultz.

988

200

1188192 Bad debts written off

"",""""'"300 Donation-South African Federation ofUniversity Engineering Students. . . .

979 General expenses""""""""""- Medals............................

1904 Postages............................5 049 Stationeryand printing. . . . . . . . . . . . . .

16619 Printing of publications"""""""Institute journal-Expenses. . . . . . . . . . . .

-Secretarial fee. . . . . .

Deduct: Advertising"""""""Sales.. .. .. . .. . .. . .. .. ..

'"...

Subvention-Department ofNationalEducation.. .. .. . .. . .. .. .. . .. .

386521 410 Excess of income over expenditure trans-

ferred to accumulated fund. . . . . . . .

R71184

Cessation of membershipAssociates: M. Andriesse, C. F. Boshoff, W. C. Fother-

gill, C. C. Smythe.Graduates: E. G. Cleminson, H. D. S. Miller.Students: E. Boshoff, P. V. Cox, J. J. S. de Beer,

N. Green, N. T. Halgreen, D. J. Hammond, C. A. Hus-band, P. W. J. Jordaan, C. G. Ladds, A. M. Lightfoot,A. P. Nicol, M. A. B. Plaskett, B. J. Robbertze, B. M. L.Smith, E. D. Smith.

Competition for student membersEach year the South African Institute of Mining and

Metallurgy offers a prize (or prizes should the entrieswarrant it) of up to RlOO for the best paper or disserta-tion on a topic appropriate to the interests of the Insti-tute. The competition is open to all Student Members ofthe Institute.

A Student Member who is in fulltime study at a

university may submit the dissertation or thesis he hasto write in part fulfilment of his university degree,provided that it is presented in a manner and on a topicsuitable for publication in the journal.

Entries for 1976 should reach the Institute by 31stDecember, 1976.

JOURNAL OF THE SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY OCTOBER 1976 63