Week 11

DIAMOND

One More Thing to Build

• Prepare a One-Line Diagram for the electrical energy needs of your mining operation

• For energy needs met with fuel show the location and size of the fuel reserves– It is expected you will have diesel, gasoline, and

aviation fuel at least

Show Your Detailed Drawings

• Show a plan view section of your main production and man shaft– The drawing should show size, thickness of lining

materials, compartments, guides, areas for utility lines

• Have a drawing of your man cage• Have a drawing of your supplies and materials

cage• Have a drawing of your skip

More Drawings• Have a plan view section drawing of your two ventilation shafts

– The drawings should show size, thickness of linings, and any utilities or escapeways going through them

– Have a drawing of your main mine fan assembly• Have a section drawing of each type of drift you will have

– Examples – your ramp, the shaft bottom facilities on each level, the tunnels leading away from the shaft to the orebody footwall, your footwall access drifts, your cuts into the orebody, your ore pass

• Have a 3D drawing showing one of your drift and leaf entries coming off the footwall access and going into the orebody

• Have 3D drawings of your underground mine layout that shows your ore passes, access drifts, ramps etc.

Have Mine Operations Drawings

• Show a working drift of your mine in plan view– The drawing should show the size and travel path of your

trucks– The drawing should have the turning and loading pattern

of your loader• Show your calculations of the cycle times for your

equipment– Prepare your appendix on these calculations (turn it in)

• Remember an appendix is a mini-report that explains what you were calculating and how you calculated it. It is not just a table core dump

Have Drawing Showing the Operation of Your Ventilation System

• The ventilation pattern should be shown– It should include how you will split the air between two levels coming

off of one shaft– Drawings should show a typical duct system going down a production

entry with the fan drawing air out so as to suck fresh air into the face• A drawing should provide a cross section of your duct and fan and identify

the size of each

• Prepare the Appendix showing how you calculated your pressure drops and air volumes for sizing your main fan and the booster fans– Remember an appendix reports how you did things, not just a core

dump of tables

Get Equipment Pictures• Have pictures of your underground and surface

production equipment and ancillary machines– You can probably get pictures from vendors brochures and the

internet but– You need to add dimension information to the pictures

• Prepare appendices showing how you determined the number of each type of equipment that you would need– Remember you must explain how you calculated quantities,

show example calculations, at least tables of calculations, and reports of results that you utilized in your main mine plan

More Appendices

• Prepare an appendix showing how you calculated your manning needs and how you got your salaries and fringe benefits– This appendix will likely support a summary

manning table and cost in the main report

Report on How You Will Organize Your Final Report

• Explain the heading, subheading system you will use in your main text

• Explain how you will label figures and tables in your report and coordinate that labeling with your text heading structure

• Explain how you will name your appendices and how we will know which appendix goes with which section of the report

• Show the outline you anticipate using on your final report

Do Your Economics• For your K2 zone

– Assume one 4 caret high quality red diamond for every 600 tons of rock

– Assume you will find one large high quality 10 to 15 caret red diamond every year

• Compile a capital cost schedule showing capital investments each year– The table should also show what the capital cost is for

• You will probably take your table of capital cost items that runs top to bottom and then run it left to right showing time period for each investment

• Be sure to add things you missed such as footings, fuel storage, and other items you find missing.

More Economics

• Prepare a similar table for operating expenses by year– You use a lot of contracted services so be sure to

include them• Now prepare a table of revenue coming in– Include money paid out in royalties– Assume your private land owners that have not already

agreed to sell you their land will want 25% more royalty than the state• The Autistic artisans will not sell out for any price

Combine Your Tables

• Produce a Cash Flow from the 3 tables• Calculate the NPV, PVR, and IRR– These will not necessarily be the final numbers

since it is anticipated you may have several things not finished in your tables.

And One More Thing

• This is the week to turn in your revised midterm report

COAL

One More Thing to Build

• Prepare a One-Line Diagram for the electrical energy needs of your mining operation

• For energy needs met with fuel show the location and size of the fuel reserves

Complete Tasks That Were Not Done the Last few Weeks

• Prepare a year by year Royalty and out of seam dilution schedule

• Run your ventilation simulations and size your fans– This will involve 3 points in time as outlined last

week• Present your final Belt Analyst and Slysel work

Mass Balance Your Prep Plant

• Trace a mass balance through your coal preparation plant– Determine the year by year tonnage of coarse and

fine coal refuge• (make sure water is accounted for in your mass

balance)– Draw out your waste facilities• Make sure their volume and capacity match the mass

balance need

Planning Ahead on Prep

• When you go from #6 coal to Met coal you have a step up in production rate– Show how you will handle that with your coal

preparation plant• If you end up needing a new prep plant then use the

old one to start #7 coal mining

• With your waste placement design show by design that you can mine the #7 coal without creating problems from your waste placement

Show Drawing Details

• Provide a section view with dimensions down your slope

• Provide a plan view across all shafts that you plan– The drawing should show shaft size, liner

thickness, all compartments, etc.– Provide a drawing of any supply of man cages you

may have

Report on How You Will Organize Your Final Report

• Explain the heading, subheading system you will use in your main text

• Explain how you will label figures and tables in your report and coordinate that labeling with your text heading structure

• Explain how you will name your appendices and how we will know which appendix goes with which section of the report

• Show the outline you anticipate using on your final report

Do Your Economics

• Compile a capital cost schedule showing capital investments each year– The table should also show what the capital cost is

for• You will probably take your table of capital cost items

that runs top to bottom and then run it left to right showing time period for each investment• Be sure to add things you missed

More Economics

• Prepare a similar table for operating expenses by year– Be sure to account for any contracted services

• Now prepare a table of revenue coming in– Include money paid out in royalties

Combine Your Tables

• Produce a Cash Flow from the 3 tables• Calculate the NPV, PVR, and IRR– These will not necessarily be the final numbers

since it is anticipated you may have several things not finished in your tables.

COPPER GOLD

Your Big Task – Sequence Your Pit

• Develop Stage Pits for Every 5 years of your 50 year mine life– Easy way to do is with the price fake method – low

prices get progressively smaller richer pits• Problem is these make thin shells of 50 feet and then

jump 30 years at a time• Can’t execute such a mine plan• I can use it to map my best ore.

– Multipit allows you to control step size

After You Sequence Your Pit

• Put in Your Benches and Roads• Do not have a completely new road network

every year.• Run MSVALP to optimize your schedule and

cut-off grades• Run Your Economic Analysis.

Report on How You Will Organize Your Final Report

• Explain the heading, subheading system you will use in your main text

• Explain how you will label figures and tables in your report and coordinate that labeling with your text heading structure

• Explain how you will name your appendices and how we will know which appendix goes with which section of the report

• Show the outline you anticipate using on your final report