reserves_db.pdf

Copyright © 2013 Gemcom Software International Inc. (Gemcom)

All rights reserved. Gemcom publishes this documentation for the sole use of Gemcom licensees.

Without written permission, you may not sell, reproduce, store in a retrieval system, or transmit

any part of this documentation. For such permission, or to obtain extra copies please contact your

local Gemcom office, or visit www.gemcomsoftware.com.

This software and documentation is proprietary to Gemcom and, except where expressly provided

otherwise, does not form part of any contract. Changes may bemade in products or services at

any timewithout notice.

While every precaution has been taken in the preparation of this manual, neither the authors nor

Gemcom assumes responsibility for errors or omissions. Neither will be held liable for any damages

caused or alleged to be caused from the use of the information contained herein.

Gemcom Software International Inc., Gemcom, the Gemcom logo, combinations thereof, and

GEMS, Surpac, Minex, MineSched, Whittle, PCBC, Gemcom InSite, and Gemcom Hub are

trademarks of Gemcom Software International Inc. or its wholly-owned subsidiaries.

Product

GemcomMinex™ 6.2

Last modified: Tuesday, 21May 2013

Table of Contents

About this document 5

Overview 5

Requirements 6

Objectives 6

Workflow 7

Document conventions 8

Typographical conventions 8

Keyboard conventions 8

Menu conventions 8

Mouse conventions 9

Form elements 9

Setup for this tutorial 12

Tutorial data 12

Activity: Install the data set 12

Data set location 12

Activity: Back up the data set 12

Create a Minex project 13

Activity: Create a Minex project 13

Creating a reservesDB 15

Activity: Create a reservesDB 15

Setting Up Codes and Layers 18

Codes 18

Layers 19

Activity: Set up codes and layers 20

Adding a pit 22

Activity: Add a pit 22

Adding quality variables 24

Activity: Add a quality variable 24

Fields in the Add Variable section 25

Generating reserves 26

Activity: Generate reserves 26

Updating quality variables 29

Activity: Update quality variables 29

Reporting 31

Activity: Create a status report 31

Columns on the Status Report 33

Activity: Create a detailed report 33

Important features on the Reserves DB Report form 34

Checking reserves 40

Activity: Create a seam insitu resources report 40

Activity: Create a grid volumetrics reports 43

Troubleshooting 46

Summary 47

About this document

About this documentThis tutorial introduces the concept of theMinex open pit reserves database (reservesDB). The

reservesDB stores the volumes for:

l the blocks in a pit design for an open cut stratified deposit

l the blocks in a dump design for an open pit dump

This tutorial uses a data set that is copied to your computer when Minex is installed.

When the software has been installed, more detailed information is available in theMinex Help,

which you can open from theHelpmenu. You can also contact your local Gemcom support office for

training.

OverviewA pit design or dump design represents the geometric shape of your mine or dump. Each block

should represent a sensible mining unit or dumping unit. When you create a reservesDB, the

volumes in these blocks are calculated and stored. You must create a pit design or dump design

before you create a reservesDB, and you must create a reservesDB before scheduling mining

operations.

Note: For this tutorial you will work only with pits, however, the processes are the same for

dumps.

A pit is identified by a pit number (for example 7). The pit is divided into benches, strips, blocks and

layers.

In the open pit reservesDB, the labels or keys that are used to store the volumes are as follows:

l PIT / DUMP

l BENCH

l STRIP

l BLOCK

l LAYER

Keys or labels enable rapid access to the database. For example, the following block contains a coal

layer and an overburden layer.

Gemcom Minex™ 6.2 Page 5 of 47 OP Reserves DB tutorial

About this document

The reservesDB is an Indexed Sequential Access Method (ISAM) file. The indexes enable fast retrieval

of data.

After you create a reservesDB, you can:

l calculate the volumes in the blocks of your pit design or dump design

l set up the database to store the volume data

l produce reports that show the volume and tonnage of coal (and waste) in the reserves

l show the reserves, and the seams within the pit, in Graphics

RequirementsBefore proceeding with this tutorial, you will need:

l a good understanding of basic Minex concepts

l Minex 6.2 or later installed

l the Reserves data set

l a licence for the Open Pit Design and Reserves module

If you accept the default settings when you first install Minex, the data sets are installed. If you chose

not to install the data sets, refer to the Tutorial data section of the Set up for this tutorial chapter.

ObjectivesAfter working through this tutorial, you will be able to:

l calculate the volumes in the blocks of a pit design

l set up the reservesDB to store volume data

l produce reports that show the volume and tonnage of coal (and waste) in the reserves


Workflow

WorkflowThe following workflow demonstrates the steps in this tutorial. There are other ways to achieve a

similar result.


Document conventions Typographical conventions

Document conventionsTypographical conventionsSome text in this guide has special formatting to help you identify it as part of a particular element of

information. The following table describes the different text formats and their meanings.

Text format Meaning

<Bold Italic>

Text or data that varies with each input is shown in bold italic font and enclosed in angle brackets.Some examples are installation directories, dates, names, and passwords. When you substitute thetext for the variable, do not include the brackets. For example: <password> requires you tosubstitute a password in place of ‘<password>’.

ItalicA word or phrase to which the author wants to give emphasis. For example: youmust select anitem from the list to continue.

Bold

This font style indicates one of the following:

l A file name, path, or URL.

l Strongly emphasised text. For example, “It is very important to save the data […]”.

l Text that a procedure has instructed you to type.

l A menu option, tab, button, check box, list, option button, text box, or icon.

For example: Save the file as pit1.str.

Keyboard conventionsKey combination Meaning

<key>+<key>Press and hold the first key, then press the second key. For example: CTRL+Z means pressand hold the CTRL key, then press Z.

Menu conventionsWhen you click, or move the pointer over, somemenu commands, a secondary, or subordinate,

menu appears. To indicate that you should select a command on a subordinatemenu, this

documentation uses a greater than (>) sign to separate themain menu command from the

subordinatemenu command. For example, File > Project > Project Managermeans choose the File

menu, move themouse pointer over the Project command, and then select Project Manager on the

subordinatemenu.


Document conventions Mouse conventions

Mouse conventionsAction Description

Click Press and release the left mouse button without moving the mouse.Right-click Press and release the right mouse button without moving the mouse.Double-click Rapidly click the left mouse button twice without moving the mouse.

Drag <an object>With the mouse pointer over the object, press and hold the left mouse button to select theobject. Move the pointer until the object is in the position you want, and then release themouse button.

RotateUse your finger to make the wheel button roll. Move it forward, that is in a clockwisedirection, or backward, that is in an anticlockwise direction.

Form elementsForms can contain a variety of elements that enable users to carry out operations. Here is an

example form.

Forms can contain the following elements


Document conventions Form elements

Element Description Example

Title Title of the form.

TabLabelled group of options used for many similarkinds of settings.

Text box orfield

Rectangular box in which you can type text. If thebox already contains text, you can select that textand edit it.

Drop-downcombo box

Closed version of a list box with an arrow next toit. Clicking the arrow opens the list.

Optionbutton

Round button you can use to select one of a groupof mutually exclusive options.

LabelText attached to any option, box, button, or to anyother element of a window or dialog box.

Help button Context-sensitive Help button.

Check boxSquare box that you select or clear to turn anoption on or off.

ButtonRectangular or square button that runs acommand. Buttons have text labels to indicatetheir purpose.

IconA graphical button that you can click to run a com-mand.

List boxAny type of box containing a selectable list ofitems in table format.


Document conventions Form elements

ElementDescription Example

MenuA set of options or com-mands that you can run.

Spin box

A text box with up anddown arrows that you canclick to move through a setof fixed values. You canalso type a valid value inthe box.

Tree

A graphical representationof a hierarchical structure.A plus sign next to an itemon the tree indicates thatyou can expand the itemto show subordinateitems; a minus sign indi-cates that you can collapsethe item.


Setup for this tutorial Activity: Install the data set

Setup for this tutorial

Tutorial dataWhen you install Minex and accept the default installation settings, the tutorial data is installed on

your machine.If you choose not to install the tutorial data sets when installing Minex, you can install

them separately.

Activity: Install the data set

1. Double-click theMinexInstallation.msi file on the installation CD.2. At theWelcomemessage, click Next.3. SelectModify, and click Next.

Minex displays the Custom Setup options.

4. Click the icon next to the Tutorial Data Sets option and select This feature will be

installed on local hard drive.

5. Click Next, and follow the remaining installation messages.

Data set locationThe data set is installed to the following location by default.

Operating system LocationWindows 7 C:\Users\Public\Gemcom\Minex\6.x\shared\tutorialData\Datasets\Reserves\

Windows XP C:\Documents and Settings\AllUsers\Gemcom\Minex\6.x\shared\tutorialData\Datasets\Reserves\

Note: If you changed the default settings when you installed Minex, the files may be in a different

location.

Activity: Back up the data setIt is a good idea to keep a backup copy of the data in case you want to restart the tutorial with a

fresh set of data later.

1. Start Windows Explorer.2. Browse to the data set.3. Right-click the Reserves folder, and choose Send To > Compressed (zipped) folder.4. In Windows Explorer, make a new folder for backups, for example C:\minexBackups, and

copy the zip file to that folder.


Setup for this tutorial Activity: Create aMinexproject

Create a Minex projectTo isolate your data so that specific settings can be used, you will create a Minex project and set the

working directory to the location of the tutorial data (Reserves).

Activity: Create a Minex project

1. Start Minex.2. Select File > Project > Project Manager.3. Click New.4. In the Project Name field, typeOPReservesDBTutorial.5. Browse to the Reserves folder.

Tip: When you are browsing to this folder you can click the Jump to My Documentsicon to select a folder that is close to the folder of the data set.

6. Click Finish.

The project is set up and theMinex Explorer displays the Reserves folder and subfolders.


Setup for this tutorial Activity: Create aMinexproject

Tip: In theMinex Explorer you can select the top level folder, which is Reserves for thisproject, look at the Properties pane, and see the full path of the project. This is useful if

you forget, or want to verify, where the data is.


Creating a reservesDB Activity: Create a reservesDB

Creating a reservesDBBefore you generate volumes for blocks and determine how they will be indexed, you need to create

a reservesDB database. After you have created the reserves database, it is visible as a .dbr file in the

Minex Explorer.

Activity: Create a reservesDBTo create a reservesDB:

1. Choose File > New.

TheNew Wizard opens.2. From the Select a Template list, choose ReservesDB.dbr, and click Next.



3. In theName field, type resdb1, and click Finish.

The new reservesDB, resdb1.dbr, is visible in theMinex Explorer.

Tip: To open an existing reservesDB, right-click the database in theMinex Explorer,



and click Open.When you create a reservesDB, three files are created: a DRB file a DAT file, and an IDX

file. You can view these files using Windows Explorer.

If you want to copy a reservesDB to another location, youmust copy all three files.


Setting UpCodesand Layers Activity: Create a reservesDB

Setting Up Codes and LayersYou can set up codes to ensure that mining equipment is used to mine the types ofmaterial (such as

coal or parting) for which it is designed.

CodesThe codes file contains a series of codes and values, which you can use for all layers.

Note: You can have a maximum of 500 seams in the reservesDB.

The following image shows the contents of a typical codes file.


Setting UpCodesand Layers Activity: Create a reservesDB

Field Description

Code FileThe name of the code file. You can type a new name with a .MIN or .OMC extension, or select an

existing file from the drop-down list or by clicking the ellipsis button .Codes table

Material CodeThe code for the material in the seam/layer. Typically there are defaults for each code. For exam-ple, WASTE and COAL.

TypeThe abbreviation for the code. You can type the abbreviation to save time. For example, W =Waste, C = Coal, P=Part.

Surface Code

The code for surface mining. Surface mining involves area-based operations such as coal clean-up or tree clearing. The surface code is primarily used in scheduling, but can be useful indatabase editing. This code can be used as a filter to report waste and coal into different reportclassifications.

Pre CodeThe code for pre-mining. Pre-mining includes activities such as drilling and ripping. The pre-mining code is primarily used in scheduling, but can be useful in database editing. This code canbe used as a filter to report waste and coal into different report classifications.

Mine CodeThe code for mining. Mining is the excavation of coal or waste. The mining code is primarily usedin scheduling, but can be useful in database editing. This code can be used as a filter to reportwaste and coal into different report classifications.

Bulk FactorThe factor used when calculating loose or swollen volumes from bank volumes. Typically, this fac-tor is 1.3. This value is useful for truck calculations.

Compaction

The compaction factor for the material in the seam/layer. The compaction factor is the ratiobetween the volume of the material when loose or swollen, and the volume of the materialwhen compacted. For example, material is loose when transported in a truck, and compactedwhen placed in a dump. The default value is 1.2.

Recovery/Rehandle

In coal mines, the coal is recovered from the pit but some coal is permanently lost. It mightremain on the pit floor or in a wall or lost to waste. Using the recovery/rehandle factor, you canreflect this loss in the yield.

Run-of-mine (ROM) COAL is calculated as:

Recovery is stored as a % value.

The rehandle value is usually associated with waste material. Waste material, particularly indragline operations, could be double-handled or rehandled. The rehandle is also a percentage.

Description A brief description of the code.Reset to Defaultsbutton

Reloads the default values for the codes.

Layers

Layer FileThe name of the layer file. You can type a new name with a .MIN or .OLC extension, or select an

existing file from the drop-down list or by clicking the ellipsis button .

Select Seams but-ton

Opens the Select form where you can choose seams. Layer names are then automatically definedfor the selected seams and used to populate the Layer table. For example, seam A becomeslayer AIB (Waste) and AC (Coal).

Update Code Infobutton

Reads the codes defined in the Code table and updates the corresponding values in the Layerstable.

Validate Layers but-ton

Validates the data in the Layers table. For example, the order of layers, any missing roof grids orfloor grids. .

LayersIn the context of a reservesDB, a ‘layer’ is a layer of overburden, coal, or interburden.

Note: You can have a maximum of 1000 layers in the reservesDB.


Setting UpCodesand Layers Activity: Set up codesand layers

The following image shows five layers of coal, one layer of overburden, and four layers of

interburden.

A typical layers file is named LAYERS.MIN. The following is an example of a LAYERS.MIN file.

To help you understand the information in LAYERS.MIN, look at theWEATH line. WEATH is a layer of

waste; it bulks at 1.2, and has a rehandle of 0. The layer goes from TOPS to WSF (WSF stands for

weathering seam floor).

The Roof Grid and Floor Grid columns refer to grids in theMerged.grd folder.

Activity: Set up codes and layers

1. ChooseOPReservesDB > Initialize > Edit Codes and Layers.2. The Edit Codes and Layers form appears.

3. In the Codes section, use the ellipsis button to locate CODES.MIN.4. Select CODES.MIN, and click Select.5. In the Layers section, use the ellipsis button to location LAYERS.MIN.6. Select LAYERS.MIN, and click Select.7. Click Update Code Info.

The Layers table is updated with the codes from the Codes table.

8. Click Validate Layers to validate the information in the Layers table.

Minex checks the layer order and identifies any missing roof or floor grids.

The Information form opens, indicating that errors have been found.


Setting UpCodesand Layers Activity: Set up codesand layers

9. On the Information form, click Ok.10. On the Edit Codes and Layers form, click Ok.11. When prompted, click Yes to overwrite the LAYERS.MIN file.

12. When prompted, click Yes to overwrite the CODES.MIN file.

13. Close the Edit Codes and Layers form.

You can have successfully loaded a Codes file and a Layers file.


Adding a pit Activity: Add a pit

Adding a pitYou must add a pit or a dump to the reservesDB before you can store any reserves data in the

database. You can add more than one pit or dump to a reservesDB. You can make subtle

modifications to the reserves and cater for unknown variables. For example, if you were unsure of

themost realistic recovery/rehandle value to use for coal, you could define two pits with different

recovery/rehandle values.

Activity: Add a pitNote: To add a pit, you must have a layers file that contains the layers in the correct stratigraphic

sequence.

To add a pit:

1. Make sure that the reservesDB, resdb1.dbr, is open.2. ChooseOP ReservesDB > Initialize > Add Pit/Dump.

The Add Pit/Dump form opens.3. Fill in the form as shown.

Tip: Choose a 'reservesDB pit number' that corresponds to the 'geometry pit number' (that is, the pit number of the pit design that you will use).

Note: You can use a .MIN file or an .OLC file as the layers file.4. Click Ok.


Adding a pit Activity: Add a pit

5. A pit creation confirmation message is displayed in theOutput Window.

6. Close the Add Pit/Dump form.


Adding quality variables Activity: Add a quality variable

Adding quality variablesA quality variable is an attribute; such as ash, relative density, or moisture; that you aremeasuring in

a coal deposit and whose value could be different across the coal deposit. When you have to deliver

coal with a particular quality characteristic, you must ensure that you have quality variables defined

for each of the characteristics.

Two quality variables are automatically defined: RAWRD (relative density) and RAWASH (percentage

of ash). The first variable must be RAWRD, and the second variable must be RAWASH, so that you

can import quality data correctly. In the following activity, you will add themoisture quality variable.

Activity: Add a quality variableTo add a quality variable:

1. ChooseOP ReservesDB > Initialize > Add Quality Variable.

The Add Quality Variable form opens.2. Fill in the Add Variable section of the form as shown.


Adding quality variables Activity: Add a quality variable

Fields in the Add Variable section

Field DescriptionVariable The name of the variable.

Desc 1 Additional information about the variable.

Desc 2 Additional information about the variable, often used to specify the unit of measure.

Grid Suffix The suffix of the grids, in the Merged.grd folder, which represent this quality variable.

Default -Coal

The value for this quality that the software will use in a coal layer when there is no cor-responding quality grid.

DefaultWaste

The value for this quality that the software will use in a waste layer when there is no cor-responding quality grid.

3. Click Add Variable.4. Click Ok.5. Close the Add Quality Variable form.

Note: To add the quality data to the reserves database, you first generate reserves, and then use

the Reserves > Build > Quality Update command. Because not all of the quality data exists in this

tutorial, performing a quality update will not be successful.


Generating reserves Activity: Generate reserves

Generating reservesWhen you generate reserves, the volumes in the blocks are calculated and stored in the reserves

database.

Activity: Generate reservesTo generate reserves:

1. Open THEDON.GM3.2. ChooseOP ReservesDB > Build > Generate Reserves.

TheGenerate Reserves form appears.3. Ensure the default settings match the form as shown, and click Auto Range.

The Pit/Dump Range table is populated.

Note: When you added a pit earlier in this tutorial, you added Reserves DB Pit 7.



Because the Specify Geometry Pit/Dump check box is cleared, Minex will use the geome-

try for Pit 7 in the open geometry file to define the benches, strips, and blocks when it

generates reserves. If you want to use a different pit in the geometry file, select the Spec-

ify Geometry Pit/Dump and specify a 'geometry' pit. For more information about the

Generate Reserves form, refer to theMinex Help.

Tip: It is a good idea to save parameters because you might need to run the reservesgeneration more than once. For example, if there are any reserves generation errors.

4. Click Ok.

Minex generates the reserves and displays the results in the OutputWindow.

If any errors occurred during reserves generation, you would correct them and generate



the reserves again.5. Close theGenerate Reserves form.


Updating quality variables Activity: Update quality variables

Updating quality variablesActivity: Update quality variablesTo update quality variables:

1. Make sure the reservesDB, resdb1.dbr, is open.2. ChooseOP ReservesDB > Build > Quality Update.

TheQuality Update form appears.3. Fill in the form as shown.

Tip: To populate the Variable table, click Select Variables, and, on the Select form,select all of the variables and click Ok.

4. Click Ok.

The Quality Parameter Update Report is displayed in theOutput Window.


Updating quality variables Activity: Update quality variables

The errors listed in the report are expected, because the grid files do not exist in theQual-

ity.grd folder of this data set.5. Close theQuality Update form.


Reporting Activity: Create a status report

ReportingActivity: Create a status reportTo create a status/null report:

1. Right-click in theOutput Window, and click Clear Output.2. ChooseOP ReservesDB > Reporting > Status/Null Report.

The Status/Null Report form appears.3. Fill in the form as shown.

4. Click Ok.

The Status Report is generated in theOutput Window.


Reporting Activity: Create a status report


Reporting Activity: Create a detailed report

Note: In the Status Report, an asterisk indicates coal. The preceding image shows that

block 12 contains 266 tonnes of coal (rather than 266 tonnes of waste).

Columns on the Status Report

Column DescriptionPit No,Ben No,Str No, BlkNo, LayerID

The pit/dump, bench, strip, block, and layer for which the data is reported.

% Expo The amount of the block or layer that is exposed. This value is useful in scheduling.

% SurfThe percentage of the block that has been surface mined. Surface mining involves area-based operations such as coal clean-up or tree clearing.

% PremThe percentage of the block that has been pre-mined. Pre-mining includes activities such asdrilling and ripping.

% Mine*The percentage of the block that has been mined. Mining is performed by front end loaders,shovels, or draglines.

% UWed% R.D.*

l For waste: For sloping seams, the percentage of the waste block that is thewedge volume between the bench roof and the seam floor, and needs tobe mined separately.

l For coal: The relative density.

%LWed%Ash*

l For waste: For sloping seams, the percentage of the waste block that is thewedge volume between the seam floor and the bench floor, and needs tobe mined separately.

l For coal: The percentage of Ash.

% Reh EffS/R*

l For waste: The percentage rehandle.In coal mines, the coal is recovered from the pit but some coal is per-manently lost, remaining on the pit floor or in a wall, or lost to waste. Therehandle value is usually associated with waste material. Waste material,particularly in dragline operations, may be double-handled or rehandled.

l For coal: The effective strip ratio.

VolumeTonnage*

l For waste: The volume.

l For coal: The tonnage.

Thick The thickness for coal or overburden/interburden (waste).

5. Make a note of the circled values for use later in this tutorial.6. Close the Status/Null Report form.

Activity: Create a detailed reportTo create a detailed report:

1. Right-click in theOutput Window, and click Clear Output.2. Make sure that THEDON.GM3 is open.3. ChooseOP ReservesDB > Reporting > Detailed Report.

The Reserves DB Report form opens.



Important features on the Reserves DB Report form

Fields DescriptionSelect Var-iables sec-tion

In this section, you can specify the variables you want to include in the report.

Pit/DumpSelectionsection

In this section, you can specify which pits/dumps, benches, strips, blocks and layers youwant to include in the report.

Use LimitingPolygoncheck box

You can select this check box, and then click one of the adjacent buttons to limit thereport to the area within the polygon.

Report Type

You can select .txt or .csv as the file format.

Tip: On many computers, Excel is the default application for CSV files. If that is true,you can select the Open CSV report in default application check box, and the report willopen in Excel after you click Ok.



4. Fill in the form as shown.

Tip: To populate the Pit/Dump table, click Select Pit/Dump(s) and choose 7.5. Click Select Variables.

The Select form opens.



6. Select the variables as shown.

7. Click OK.

The Select Variables table is populated.



8. On the Reserves DB Report form, click Ok.

The Detailed Report is generated in theOutput Window.



9. Make a note of the circled values for use later in the tutorial.

Note: When you compare the volumes between other reports, the calculated values

will vary.10. Start theWindows calculator program.

Tip: In Windows, select Start > Run, and type Calc.11. Perform the following calculation to check the percentage difference between the Status

Report and the Detailed Report:

Using the total coal tonnes from the reports, the equation is:



This calculation shows that the two reports return similar results. A variable of <2% is

acceptable.


Checking reserves Activity: Create a seam insitu resources report

Checking reservesYou check reserves to confirm that the reserves were generated correctly. This is an important task,

and must be carried out each time you generate reserves.

Activity: Create a seam insitu resources reportTo create a seam insitu resources report:

1. Right-click in theOutput Window, and click Clear Output.2. Make sure that THEDON.B31 is open.3. Choose SeamModel > Insitu Resource Reporting.

The Seam Insitu Resources Report form opens.4. In the Seam Definition section, from theDD Name list, selectMerged.5. In theQuality section, from theDD Name list, select Quality.6. Click Create List.

The Seam table is populated.7. Fill in the forms as shown.



8. Click the Limits tab.9. Fill in the form as shown.

10. Click Ok.

The Seam Insitu Reserves Report is generated in theOutput Window.



11. Close the Seam Insitu Resources Report form.12. Make a note of the circled values for use later in this tutorial.13. Start theWindows calculator program.

Tip: In Windows, select Start > Run, and type Calc.14. Perform the following calculation to check the percentage difference between the Seam

Insitu Reserves Report and the Status Report:

Using the total coal tonnes from the report, the equation is:

This calculation shows that the two reports return similar results. A variance of <2%


Checking reserves Activity: Create a grid volumetrics reports

between the reports is acceptable.

Activity: Create a grid volumetrics reportsTo create a grid volumetrics report:

1. Right-click in theOutput Window, and click Clear Output.2. ChooseGrid > Volumes.3. Fill in the form as shown.

4. Click Ok.

The Grid Volume Report is generated in theOutput Window.



5. Compare the combined total volume of waste and coal (that is, Volume cu. metres Nett)

with the combine total voume of waste and coal from the Seam Insitu Reserves Report:

The Grid Volumes report shows a result of 593208256m3.

The total tonnes is:

Using the values from the Grid Volume Report, the equation is:

The precise total of waste and coal from the Seam Insitu Reserves Report is:

The percentage difference between the Grid Volume report and the Seam Insitu Reserves

Report is:

Using the values from the reports, the equation is:



In the tutorial, the Grid Volume report shows 0.14% less waste+coal than the Seam Insitu

Reserves Report.


Troubleshooting Activity: Create a grid volumetrics reports

TroubleshootingIf you generate a reservesDB, and the grids were not merged correctly, a messagemay appear in the

Output Window, for example, Null grid values – Grid : WSF, and Minexmay report reserves

incorrectly. Refer to the OP Design tutorial for information on how to correctly merge a gridded

model.


Summary Activity: Create a grid volumetrics reports

SummaryCongratulations on completing this tutorial. You should now have a greater understanding of the

reservesDB. You have learnt a number of concepts and topics including:

l how to calculate the volumes in the blocks of a pit design

l how to set up the reservesDB to store volume data

l how to produce reports that show the volume and tonnage of coal (and waste) in the

reserves
