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Resue mining with eDevTM

Electronics Detonators at

Stawell Gold Mines

Boni Degay

SE UG TS

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Stawell Gold Mines

150 km West of Melbourne150 km West of Melbourne

Old mine (1853)Old mine (1853)

800K tonnes annual ore output800K tonnes annual ore output

100,000 ounces Au A100,000 ounces Au A!"rams Au#tn cut$off "rade!"rams Au#tn cut$off "rade

%ub le&el up'ole retreat tec'niue%ub le&el up'ole retreat tec'niue*traction dri&es (+5m * 5m) at t'e base of t'e ore bod-*traction dri&es (+5m * 5m) at t'e base of t'e ore bod-Ore and .aste combination /splits are encounteredOre and .aste combination /splits are encountered

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Resue mining

n use in %out' Africa for narro. &einn use in %out' Africa for narro. &ein2.o firin"s .it' .aste fired initiall-2.o firin"s .it' .aste fired initiall-rillin" and firin" t'e ore re"ion independentl-rillin" and firin" t'e ore re"ion independentl-4irin" .it' millisecond detonator4irin" .it' millisecond detonator

2.o pass firin" for %ta.ell2.o pass firin" for %ta.elle&elopment c-cle s'all slo. do.ne&elopment c-cle s'all slo. do.n4irin" times .ere end of s'ifts4irin" times .ere end of s'iftsontradicts safet- re"s of no .orkin" under unsupportedontradicts safet- re"s of no .orkin" under unsupported

"round"round

%in"le pass and able to efficientl- se"re"ate ore and .aste%in"le pass and able to efficientl- se"re"ate ore and .asteM% and 6 combo, s'ort len"t' i$kon#72s or a&e-sM% and 6 combo, s'ort len"t' i$kon#72s or a&e-see& demonstration (10 s'ots at 6 pricin")ee& demonstration (10 s'ots at 6 pricin")

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Typical Stawell extraction drives

Wit' 6 dela-s on

a 9ertical split

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Typical outcome with L

6on" section, s'ort t'ro. and 'i"'

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Typical result with L !iring"s

ross section

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eDev demo timing #$rdshot%

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eDev demo result

6on" section, lo. and lon"

:rades as per "rab samples b- "eolo"ist

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eDev demo result

ross section

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eDev demo

Long section

; of t'e face

.it' .aste

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eDev demo

6on" section

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eDev demo

ross section

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eDev demo

ia"onal split

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eDev demo

6on" section

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eDev demo

2op &ie.

ross sections

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Resue mining techni&ue

6ocatin" t'e burn at t'e .aste re"ion6ocatin" t'e burn at t'e .aste re"ion

Minimal alteration of t'e miners patternMinimal alteration of t'e miners pattern

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Resue mining results' outcomes

ffecti&e se"re"ation of ore and .aste in sin"le firin"ffecti&e se"re"ation of ore and .aste in sin"le firin"

O&er +0= increase in 'ead "rade at t'e 'eadin"sO&er +0= increase in 'ead "rade at t'e 'eadin"s+= increase at t'e mill from 3>8"rams Au#tn to +1? "rams Au#tn+= increase at t'e mill from 3>8"rams Au#tn to +1? "rams Au#tn@+M additional re&enue for t'e mine@+M additional re&enue for t'e mine

ncreased ad&ance ratesncreased ad&ance ratesee& faces pullin" to t'e toes or @!00mmee& faces pullin" to t'e toes or @!00mm

mpro&ed perimeter profilempro&ed perimeter profileBalf barrelsCCBalf barrelsCC

!+000 tonnes less .aste to 'aul to t'e surface!+000 tonnes less .aste to 'aul to t'e surface

ncreased millin" capacit-ncreased millin" capacit-

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Resue mining results' outcomes

ase stud- appro&ed after t'e 3ase stud- appro&ed after t'e 3 rdrddemo s'otdemo s'ot

Additional ee& ordered after DAdditional ee& ordered after D t't'demo s'otdemo s'ot

aper a"reed .it' %ta.ell to be presented at t'e 7: conference inaper a"reed .it' %ta.ell to be presented at t'e 7: conference in

anberra before t'e demo uantit- .ould e&en be consumedanberra before t'e demo uantit- .ould e&en be consumed

6e&era"e ee& success to tr- and re"ain %ta.ell back to i$kon (a&e-s in6e&era"e ee& success to tr- and re"ain %ta.ell back to i$kon (a&e-s inuse for production s'ots)use for production s'ots)

Eeaconsfield :old are interested (72 user)Eeaconsfield :old are interested (72 user)

Bent- :old (72 user), 4oster&ille :old are on t'e pipelineBent- :old (72 user), 4oster&ille :old are on t'e pipeline

//MFsG a&e-tronics .ill 'a&e an eui&alent /ee& ne*t -earCMFsG a&e-tronics .ill 'a&e an eui&alent /ee& ne*t -earC

Ba&in" partners'ip .it' Hone* to enable suppl- of broader 7: product ran"eBa&in" partners'ip .it' Hone* to enable suppl- of broader 7: product ran"e

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IuestionsCCCIuestionsCCC