Minesight Block Models and Rough Open Pits (1)

Block Models and Rough Open Pits ©2012 Dr. B. C. Paul Note – These slides contain many screen shots from the program MineSight developed by Mintec. Credit for the program is given to its developers. These slides draw on previous material prepared by the author and some of the topics covered are also found in Mintec training courses.

Representing Ore Bodies • So far we have used contour lines and the linker tool to set bounds on ore bodies • Disseminated deposits lack firm orebody edges • Even vein deposits with clear edges usually have grade variations within their limits

• Orebodies can be expressed digitally by breaking the ground up into large numbers of little cubes • This representation is called a “Block Model” • Because very large numbers of blocks the technique if for computer based analysis

Block Model Identification Begins When You Start MineSight You must have an idea Of what the coordinates Are for your ore body And what units because You have to specify Project limits. You also need to have An idea of block size.

We Will Look at Block Models with Open Pit this Time. • Splitting blocks with benches is a mathematical complexity • Try to make block height correspond to bench height • Bench height is related to equipment size • • •

Shovels have to be able to dig to top of bench A big shovel goes with a big truck Big shovels and trucks go with big deposits (obviously you need an idea of how big your deposit is)

• Also related to homogeneity of ore • A Bench will generally mix all ore over its vertical height – if you need vertical selection you need shorter benches

• Taller benches usually more economic • Fewer levels to maintain • Larger drills and more drill hole spacing

Load Your Assay and Drill Hole Data into the Program

Composite Samples to Bench Height

Use Chosen Interpolation Routine to Estimate Block Grades in Model As Mining Engineers we Will often be Given block Models that Our geologists Have already Developed.

Where We Are At • We Have a Geologic Block Model (stored as a “File 15”) • We have Geologic reserves and grade and tonnage • This is where we will begin our work (at least in this class)

• Common Procedure is to Find Out How Much is Economically Minable given the overburden • This is done with a computer routine that tries to select the largest set of blocks that keeps adding to the pits value • This is where we go next

Preparing Files to Receive Data • The Pit Optimization Procedures We Will Use Require Specialized Places to Store Information • They must follow naming conventions used by the computer codes • The program therefore contains file initiation routines to ready files for that purpose

What Is Required • You Must Have a Gridded Surface Model of Your Current Topography • A gridded surface file is a digital representation of the surface • The surface is broken up into little squares and each square is assigned an average elevation

• You Must Use Minesight Compass Routines for setting up the files

What We Are Going to Do • Start Compass • (If compass is being run first time in project have to set things up) • We create a Project Control File PCF • We create a Project File

• Next We Create a Gridded Surface File

• Then we create a model view in MineSight 3D • While creating we load data into our GSF

Continuing Our Plan • We will use our regular GSF to create a special GSF for MineSight Economic Planner • We will use our block model to create a special block model for Economic Planner

• We will ask Economic Planner to Find Our Ultimate Pit • The largest set of blocks to mine that keeps making us more money as we expand

Lets Start By Getting Those Initial Files and the GSF Files Ready

We Open MineSight Compass

The First Time You Use Compass You Will Likely Get a Protest Speech

Start by Acknowledging the Complaint – Say Ok

MineSight Compass Starts (But almost everything is grayed out because it is protesting the missing files)

MineSight Likes to Have Two Files • A MineSight Project Control File

• It lists off all the different files and objects the program has to keep track of • (it’s a table of contents for a computer to read)

• A Project File

• Contain identification, name and basic dimension information for the project

• We have to Pacify MineSight before we will be allowed to proceed (unless someone already did this – which they might have to create a block model).

Use the Compass File Drop Down to Create a new PCF

It Ask to Verify It is In the Right Directory for Your Project

After verifying click Ok

Project Initialization Starts Identify your measurement units

You need to explain what Project type you have – you Will almost always be 3-D Pick a 4 letter ID for your Project. Most of your data Files will begin with this 4 letter name. When finished with the Panel click the arrow to move on.

The mineral type and Description will be for output Reports – this helps you – Not the computer.

Next It Wants to Know About the Coordinate System for Your Block Model

Commentary • This will set the area for your block model • Often this will be the same size as your project area

• But what if the orebody is just a small part of your project design area • You could save a lot of space and speed if you only built a block model in your orebody area.

I’m not doing a different size block model If I were I would need To check this box

I click to move on after Filling in the screen.

It Tells You Thanks and Indicates it is starting to make your PCF

A Dos Window Opens and You See Something Run

Then It Lays A Report on You as it Proclaims Success The report indicates what Your input was and how It used that information To lay out the PCF

MineSight Likes Putting Out Reports on Everything • Why Reports are important in Industry

• Fraud including fake mines have long been a problem • Since most mining projects will enter investor markets in some way laws have been devised to try to suppress fraud • The size of an ore reserve and how a mine is designed greatly influence project value • Thus this work must be documented

• Organizing and keeping copies of the reports MineSight keeps will help you meet documenting requirements for the things you do.

Next We Create Our Project File

To Create the File It Needs One Piece of Info Where is your project control File? Your project control file has The 4 letter name you gave When you set it up and the Number 10. I need to find a file called Demo10, click on it and then Click open.

MineSight Compass Comes Alive (You have given it the PCF and Project files)

Now We Can Get Back to Our Mission • We wanted to create a gridded surface model of our topography • (ultimately we will use this file to create a special gridded surface file for use by our open pit mine creation algorithms)

Click on the Project Tab Now Click to Open the Project File Editor

The Project File Editor Opens Now click On the File Dropdown

I Want to Create A New File

It Wants to Know What Kind Lets see – If I want to create a Gridded Surface File or a GSF I bet that 13-GSF will work. Highlight it with the curser and Left click.

It Proposes to Create a File with Just Information on Elevations That’s right. Just click the save Icon and you have Your file 13.

It Asks for a File Name

Suggest using 4 letter project ID And #13 Then click save.

It Pops Up a Success Message

Well You Have Your File 13 Sort Of • Its current weaknesses are • It contains no data • And You Can’t See It

• When Can Solve Both Problems at Once • This is done by creating a Model View • A Model View is a Set of Instructions that Allows MineSights 3D Viewer to graphically display the contents of a file

Create a Model View Using the Data Manager Pick the Directory Right Click to drop down the menu Move the curser over new and when The side menu opens move the Curser over model view and left Click.

It Asks You To Name the Model View Enter your name And then click ok

It Needs to Know Which File to Use for the Model View Block Model and Gridded Surface Files Are not shown in the Data Manager, but They are listed in the Project Control File (PCF). Thus the first thing you Must do is to identify The PCF

The PCF is a 4 Letter Name and the Number 10

Usually the selection Is obvious Click on the PCF Then Click Open

Now You Are Given a List of Invisible File 13’s and 15’s in the PCF

Click on the one you will make a model view of.

Clicking Will Cause the Chosen File to Turn Blue

Then left click on Ok

The Model View Editor Turns On

One of the first issues to be dealt with is which Number field in the file 13 (or file 15) to display. In our case there is only one field in the file 13 So it’s a non-issue. You can click on the blue List to get a drop down of all fields in the file That might be used for display

Until I Have Something In the File My Display Set-Up is not too Important

I will select a Geometry Object (ie my topography) to use in creating a Digital representation of the surface. I start by picking the Geometry Tab and then the Red Box to search for my Geometry object.

Pick a Geometry Set

I can pick a set of geometry objects to use in coding my Gridded Surface. I will be allowed to name that set later. At this point I am ready to select the geometry objects for my geometry set. Start the selection with clicking on the Red Dot Box.

Another Window Open This is a picking window. I click the red box (again) to go To a list of geometry objects.

I Pick My Topo Surface from a Directory and Click Ok

Note That My Pick List Now Contains a Geometry Object

Now I can see what kinds of things Are in the geometry object and Pick the ones I want. If no list of object contents appears then Click the blue worm to make it appear

Pick and Click Ok

The Geometry Set Window Activates Note there is now a set of geometry Sets available to name (the purpose of naming geometry Sets is to avoid the need to repick Things all over if you ever need this Set again) I name the geometry set Click Save Set Click Ok

The Model View Editor Now Has a Geometry Set to Use In Gridding the Surface

Click Grid (It will then average elevation of little digital squares and Put the result into the file 13 GSF)

It Jumps to the Gridding Detail Tab (I could also have just picked this tab myself)

The first thing I need to do is to say which variable in The file to send the result to. Pick the Blue list box for A list of variable names – there is only one in this file 13 So it will be a tough pick.

The Grid Button Lights Up

Click the Grid Button (there will normally be A short calculation delay as the program gets Average elevation in each grid square)

Now I Have Data In My File 13 I Want to Control the Display

The little color box allows me to color code a range Of values – in this case elevation. Click on the Color code box.

The Color Coding Box Comes Up I happen to know the topo is between about 6400 and 7500 feet so the default intevals are Dumb. I will click intervals to use my greater wisdom.

I’ll Put My Limits In the Intervals Box and Click Ok

Now I Will Drag and Highlight the Elevation Range to Color Code

I will then click color range to set the range Of colors.

I’ll Pick and Neon Color Range If I wanted to use Only part of the range I would click on the Color range editor. In this case I’m happy So I will click Ok

I Close Windows and Look at My Surface The elevation range Was less than I Thought so I’m not Seeing a big range Of color. (I could go back and Reset that if I Wanted).

Our Story So Far • We set up MineSight Compass with a PCF and a Project File • We created our basic gridded surface file (GSF) • We Gridded Our Topography Into It • We Set Our Display.

Thinking Ahead to Our Next Move • We will use our basic GSF to create a specialized GSF for use by Economic Planner • (We in this case will assume our geologists have supplied us with a block model). • We will then tell Economic Planner to Find Our Ultimate or Final Pit • We will display that final pit.

Getting the Special File 13 • You need an a special file 13 (gridded surface file) that allows for multiple pit surfaces and some control variables • You need to have a file 15 (block model) with extra-variables to store information about block values and material destinations • The pit generation routines will send material to various processing facilities.

Lets Start Out Getting That Special File 13 Left Click the MineSight Tab To pull down The menu On the pull down Menu left click “Compass” (this will start MineSight Compass which Is a big collection Of programs for Doing stuff)

MineSight Compass Starts Left Click on the “Project” Tab (This selects The project Screen in Compass) Left Click the Little folder open Icon to start The project file editor

We Are Going to Create a New File 13 with Extra Stuff in it Left click file to Pull down the menu Left click new to Select the new file option.

The Pop-Up Menu Wants to Know What Kind of File We Will Create

Different types of Files have Identifying numbers We want to create A file 13 (which Means the type Of file that Contains gridded Surface Information) Left click on 13 - GSF

We Now Tell it We Want a Special GSF for MineSight Economic Planner Left click on the Little box for MS-EP GSF Note the Check mark That appears

It Needs to Know Where to Find the Surface Initialization Data Left click the Little down arrow Beside the file Location area. A drop down Menu shows all Existing file 13s (this is why You needed to Have an existing File 13)

Select the existing File 13 for the Unmined Surface.

Tell it Where the Current Topography is in the File You Selected From the down Arrow select Topog (or what Ever variable You stored Topo data in) As you can See it has Now initialized Our special file 13 for MineSight Economic Planner Now click the Save icon to Save the file.

The Save Menu Comes Up to Ask You What Name to Save the File Under You are limited To 6 characters Before “.dat” And the last Two should be 13 so you and The program Can see it is a File 13. I named mine Opti13.dat Now I left click Save.

The Program Proclaims that the New File has been listed in the Project Control File This is a good Thing. Left Click ok.

Now Exit Out of Compass Left click File and from The pull down Menu select “Quit”

Making Sure Our Block Model is Ready • It already has our ore grades and rock items in • But the routines we will use need to have some extra variables to store info in. • One thought is why didn’t I fix the model right to begin with • Other reality is you will never foresee all needs so lets just learn how to fix the variable problem when it happens

To Open My Block Model Go to the Data Manager and Select Block Model

With Block Model Highlight Click the Right Mouse Key This will cause a Menu to pop up Left Click the Open Option on the menu

The Block Model Shows Up I am going to use The “Query” Function to ask What variables Are in the model To do this I Click on the little Question mark Icon.

A Dialog Box Opens at the Bottom and Advises me to click on anything I want to know about Since all I want Is to know What variables Are in the block Model I can Really click it anywhere I happened to Click it here

The Query Report Box Pops Up I’m going to check The variables in The block model. Since I’m a cool Person my model Already has the Key extra Variables in it (yours will have Nothing below Value but yours Will look like this After you follow The next Instructions)

Yes Your Poor Model Will Look Like This

What MSOPT Wants • The routine we will use to find the ultimate pit requires us have these variables in the model • • •

VALPB (the value of the block) VALPT (the value per ton of material) DEST1 (the destination for the material considering break even economics) • PUSH (the stage when a block is mined – if the model is working out a sequence) • IPER (when the block is mined • DEST2 (where the material is sent when the block was mined)

Open Compass and Pick the Project Tab and Project Editor Icon as before

The Project File Editor Opens

Pull Down the File Menu and Select Clone We are going to Make a copy of Our block model – Add the extract Variables to the Model and then Save it back to Our original block Model We all know windows Has a thing about Saving to itself.

Clone From Your File 15 (a file 15 is a block model) Pull down and Select from the Menu Check Edit items

Then click on the Clone button.

Type in the Extra Variables

Left click the Save icon When you are done

Also enter minimum Maximum and precision Values as shown here

It Will Want You to Name Your File

This file is actually A temporary copied File

I named mine 15cp15.dat (it’s a 15 meter Bench height Project, cp is for Copy and the second 15 was so I would Always know this Was a file 15 (block Model) Then I left click on Save

It Gives You a Jubilant Success Message

Now We Are Going to Clone our Added Variables File Back to the Original

Pull down the file menu and Select Clone

Select our new file as the clone source But note I did not check the edit box This time. Then hit save.

It Asks You Where You Want to Save the Result Select the name of your Original block model (file 15) and hit save.

Since You Are About to Overwrite Your Old File it Gives You Repeated Warnings that your Children will be Born Naked if you do this

You Have to Confirm that You Do Intend to Overwrite

Now We Are Ready to Go! We will use an Ultimate Pit Routine Called MSOPIT Left Click the MineSight tab On the drop Down menu Choose MSEP (MineSight Economic Planner)

On the side menu Pick MSOPIT

Trouble Shooting Note • If MineSight Economic Planner is Grayed Out on the pull down tab there is a problem with your computers settings • See the System Administrator for help (your stuck until you do)

MineSight® Economic Planner Comes Up to Help You With Your Pit

Economic Planner is Mostly New Routines The Panel to the Side Shows you the Steps You Will be Lead Through to get to your Pit design. (Kind of a nice Change from the Wonderings we have Been doing not Knowing for sure Where we were going)

Right Hand Side has input panels it needs

It Has Improved Help Facilities Pull down the help Menu Pick Panel help for An explanation Of each panel entry

The Panel Help Gives an Explanation of the Variables to be Entered on the Screen

It Needs To Know Where Your Block Model Is You probably have Only one file 15 to choose from It needs your ore and Waste density (ie water =1) If we assume our Cu ore and waste Are about 141lb/ft^3 That’s 2.23 for both

You Identify the part of your block model that is of mining interest This would let You speed things Up by excluding Areas that don’t Have ore values

It also provides you With hints on the Number of rows, Columns and levels In your model in case You want to look at Everything. It lets you specify what to do if it mines to the edge of the model (warning – the program cannot calculate stripping costs outsideThe model area)

Click on the Next Step When Its Time to Move On

It Needs to Know About the Surfaces File It Will Use Click on the pull down arrow to See the available files. It is critical that you select the Special file 13 you made for MSEP earlier (regular file 13s Don’t contain needed variables)

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Trouble Shooting Note • Sometimes when you hit the pull down choice menu you don’t see the files you expect • You may not see the file 13 you just made

• MineSight® has the undesirable ability to get the graphics interface, MineSight Compass, and MineSight Economic Planner in different directories • How this could happen is not well understood

If You Want to Make Sure You Are in the Right Directory with Economic Planner Click on the Options Heading And Pick Manage Variables From the pull down menu

The Manage Variables Screen Comes Up What you really want to see is if the Path leads to the right directory and Project file. (If you are not being allowed to select Files you know you have this path Will probably not be pointing to the Right file)

Get Out Of MSOPIT and Go to MineSight Compass

Remember – You are ONLY doing this If you have MineSight Economic Planner off in the wrong directory! (If life is good and you don’t have this problem you Can skip the slides on fixing the problem)

In Compass Go to File and Open

Work Around the Directories in Project File to Find the Right Directory

This directory maneuvering works like Any other Windows based program.

Double Click the Correct Directory

It Will Open and Show You the Project File for that Directory Left click to Pick it Then click on Open

Getting Back From Our Detour (If you had to take a Detour Restart MSOPIT) It needs to know where the starting Surface is located (MSOPIT puts the unmined surface In pit #0 so we will almost always Be starting there)

Enter or accept the default value Of 0.

It Needs to Know About Things That Would Limit Where it can put the pit You can limit the Areas of the model Used to compute Earnings (no need to Do that now) You could tell it not to Mine below a certain Depth (no need to do That now)

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You could designate surface areas that Must not be disturbed. (you would have To put a code number into the surface file which We did not do) Surface areas with the code number entered here Could not be disturbed.

Where A Plus Is By a File for the Next Step Click on the Plus to Expand the Folder This of course Is very typical Windows rules

It Needs to Know How to Get the Design Variable Optimum Pits Come From Building the Biggest Profit Our Block Model is Geologic and contains Geologic data We can tell the program To calculate our earnings From the geology or We can tell it we have Already put a dollar/ton Value on each block. (We don’t have values Pre-computed) The interval is a report diagnostic tool – I’m putting in 5000 (you’ll see what it did later in a report)

It Needs to Know Which Variable Tells it How Much of a Block is Made of Rock (Remember we do have air blocks above Use the drop down surface) Arrowthe to show you A menu of choices and Pick the variable that Has the % rock in it (in your case it is Topo%)

We don’t have to deal With more complex Optional items here

Program Needs the Range of Block Values and the Precision You Require Defaults here are Probably Ok (It’s the cost For removing the Worst junk and value Of your best block) The Last Item Cut-Off in Dollars/ton Needs a little more Explanation.

Default here is ok.

The Program Now Needs Costs For Creating an Economic Block Model from the Geologic You can import these Parameters from Another project or Export the values You determine for use In later projects

It Needs to Know the Assay Value to Track Remember and Density ofareOre the variable names selected From a pull down menu.

I’m going to look at Cu and Moly for Determining block value I already have the Rock density picked

Enter My Material Types

Many deposits have More than one type Of ore or perhaps An ore and waste

A variable in the Block model will have That code number In it.

It will usually be the Type variable which Your block model is Required to have.

But I Didn’t Ever Set Material Codes in the Block Model!?? Thus the type variable Has nothing in it. The next item asks for What to use as a Default if no value is Found in the type Variable. When I pick 1 this one Matches the table below And will have the Computer calculate The value of each Block using the formulas I will enter.

Enter My Material Types and Where It Might Go Since I have Simple geology I Have Cu ore If its high enough It goes to the Mill If not it is considered For leach If not that good I will Just dump it (Note I am putting Labels on my ore Types and destinations)

If I Click on a Brown Box In the Matrix it Will Activate My Note My Economic Input has come alive Economic Input

Click Here

It wants to Know about Costs and Earnings Associated With ore it Sends to the mill

I Enter My Costs for the Mill Route $4.24/metric tonne to mill the ore and Make concentrates $3.25/tonne to mine (your costs may Be different)

Enter My Returns from Processing If we figure the value of Cu in concentrates as $1.05 And value of Mo in concentrates as $4.00

89% recovery on The Cu And 75% on the Mo

Where Did Those Numbers Come From? • Value of Cu in concentrate • Value of metallic Cu (which you estimated from price history) • • •

Minus refining charge per lb Minus smelting charge per lb/Cu Minus transportation charge • Use cost per ton to transport to smelter • Use about 30% Cu in concentrates to get that on a per lb basis

• This will leave you with value of Cu in concentrates at the concentrator site.

Moly Value Similar • Value per lb of Moly in Moly oxide • Subtract roasting cost per lb • Subtract out the transportation cost per lb • Get the value per lb is sulfide concentrate at the mine site

• Where did the recovery values come from • Typical recoveries from mineral processing handbooks and articles.

Enter the Factors and Click Apply Factors account for Prices in lbs, Grades in percents Volumes in cubic Meters and costs in $/metric tonne

Click apply when data entry is complete for this material and destination

How Did You Get That Factor

net value/ ton= (x/100)*2204.603lbs/ton (metric) * ($/lb) where, $/lb is the price of the cu

It Now Declares it has part of the Information Matrix Ready to Use

We now click our leach ore

Input My Leach Ore Parameters I assumed no moly recovery

Leach Cu Recovery is Lower (say 70%) I put in $1.15/lb For Cu since Electrowin is only About $0.15/lb I used $1.65 per Metric Tonne for leach operations

Mining Costs I Assumed constant

Now I Input My Dump Parameters With waste you Also will get no Recovery.

Distinctive – no processing costs (unless you have a special dumping cost)

What Will the Computer Do With This Stuff • It will calculate the value of each block from its recoverable metal content (or lack there-of) • If the value is greater than the mining and processing cost the block will become a mining target and the model will look at what has to be moved to get it.

• If the block will cost more to mine and process than it will make then the block is not a mining target but it might still be in the way of something that is. • If the block has to be moved to get to something else the computer will look at whether it has enough value to justify processing • If more than one process is available the model will look for what ever gets the most net value of a block

Steps Not Required Remain Grayed Out

Another Fast Way to Bring in the Cost Matrix is to Import It Click on Import (Obviously somebody Has had to export Their matrix sometime Previous)

Use the Directory to Find and Open the Economics File

Hows that for a Slick Fast Result

You’d appreciate it even more if you had 6 processes and 7 types of ore.

We Now Deal With Overburden Mining Costs Some of our blocks Don’t even have A Cu or Mo grade Estimated to exist – These will be just In the way blocks What does it cost Us to mine them Vs. Ore material that Does have a grade -I’m using a flat $3.25 Right now

Options We Are Not Using

Mining Costs actually Increase as we mine Deeper. If we wanted to Include this detail We would check Off the box. Then a grayed out Screen on mining Cost with depth Would come to life And we would have To fill it out.

A Quarry Option Sometimes we Mine all of a top Bench and work Down a bench At a time. We can designate What portion of a Year it takes to Mine a bench (5 benches in a Year enter .2. 1 Bench every 5 Years enter 5 etc)

When you mine top down the future earnings will be discounted with time

Next We Tell It About Our Pit Slopes I’m using a constant Slope with a Minimum value of 57 degrees (like Cannanea Mex)

Slope Issues • In Rock Mechanics You Learn about Slope Stability in Open pits • If an over-all pit slope daylights significant fracture patterns the whole side of the pit can slide in (potentially loosing you your investment)

• In many cases it makes a difference which side of the pit • A fracture that could daylight near the toe of benches on one side would be pointing up on the other side • The program allows you to adjust pit slope by azimuth

• Sometimes different materials will support different slopes • Can enter complex slopes that depend on material type • Obviously material type would have to be coded into the block model

It Needs to Know the Numeric Technique to Use to Find the Largest Profit increasing Pit This set determines Whether you are Doing ultimate pits Or nested pits (right now we are After base ultimate Pit) You Choose Between Floating Cone and Learch Grossman

The Pit Design Choice • A floating cone picks a block – cones up and sees whether the cone makes money. • If it does it mines it • Simple Coding and Explanation • Considered a Heuristic trial and error approach

• Lerch Grossman uses powerful math to solve a transformed problem • • •

Much more computer intensive Can do some strange things at times Is considered an analytical solution

I Picked Floating Cone for this example (its faster) I could Specify a Minimum pit Bottom radius (real equipment Needs room to Work) I’m not going to Impose that Detail right now.

Set the Area Where the Routine Can Look for a Solution Pit

For an ultimate pit I can default on everything and give the entire block model Area as the place to look for a pit

Output Destination I can also specify A limiting surface That the pit must Be within. (right now I am Going to default To the starting Topography (pit 0)

There are 50 storage bins – you can specify where you want to store your result

I Can Tell the Program to Save Me Some Example Calculations on Specific Blocks or Groups of Blocks (so I can check on it)

Right now I’m not going to audit.

Give It My Output Preferences I need to say were The program will Keep track of where Mined blocks were Sent. That’s were Those Dest1, Dest2 Variables come in. (I picked Dest1) It needs to know where To store the value of A block. (That’s were Valpb comes in).

It also will keep track of The value per ton of Rock (That’s were the Valpt variable comes in)

Specifying Output Files

Name of the Run

Output file will Be called Rptopt. What ever You put here

Prepare to Run the Procedure Pull down the file Menu Select Run Procedure From menu

The Procedure Runs

This can take just a little while

There is your report extension name and the name you gave the run

You Can Check to Make Sure Key Inputs Read in Correctly Mining Cost Pit Slope Density Minimum and Maximum Value Cut-off Value Per ton

You Can Check Your Key Metal prices and recoveries

Remember that $5000 Spacing I Entered? Here is an Output table Showing how Many blocks In each value Range were Found. (If you get Really strange Answers this Is a place to Look and see If things make Sense)

This is a Very Crucial Table It shows Blocks going To the mill, The leach, And the dump And what the Average Grade was (if you have Mined blocks Delivered to Destinations It at least Really ran)

Here is the Over-All Money We Made and Spent

Oh Yes and the Precious Bottom Line

Now We Want to See a Picture of Our Lovely Pit Highlight were You want to put The “model Views”

Now Lets Create a New Model View to Display Our Handy-work. Pull down the File Tab and pick New On the pop-out Menu pick Model View

Name Your Model View

I thought Ultimate Pit was a good name for the view of my ultimate pit

Link it to Your Project Control File

Pick Your File to Display

For me that will be Opti13.dat (that’s where I put my new pit surface)

It Gives Me an Opportunity to Initialize Multiple Model Views It useful to have Separate “layers you can have For a staged Mining out of a Pit I’m going to pick yes

Set My Model Views Checking Off What I Want to be Able to See I could Give them Special Names if I wanted to

The New Views Appear in the Data Manager

Now Turn On Ultimate Pit 1 to See How Far the Ultimate Pit Went

Can Turn On Initial Topog to Get an Idea of Where Our Cuts Effected.

Of Course We Can Use Cut-Offs to Make the View less Gray and Dreary

On the Cut-Off Menu Select Intervals

We will probably set intervals to bench heights

Set My Vertical Range and Bench Height and Then Ok Things

Select the Entire Range and Click Properties

Pick Set Color By Range

Now Hows That For Ultimate Cool!

And Now An Assignment for You • Get the initial assignment file • It contains a block model, a GSF file for Economic planner and a cost matrix to import • Set up MSOPIT and create an ultimate pit • Set up a model view to display your open pit • Turn in your project files