Week 8
COAL
Timing Will Be Big
• Show a map of your #6 coal and areas where you
will have to cut roof rock because of your CM
selection
• Show a year by year timing map of the #6 coal
producing 3 million or more clean tons per year
– Have a schedule showing when and how much out of
seam dilution will be going to the prep plant
– Make sure your timing and equipment capacity
accounts for the out of seam dilution you will take
– Produce a year by year schedule of royalties or other
fees you will be paying to land holders.
#6 Isopack
• Prepare an elevation of the #6 seam bottom and
identify where water will drain too
– Estimate the amount of water you will be using for
your cutting equipment
– Assume your mine will be fairly dry except in places
where you approach within 150 ft of the fault
• In these area assume you will have a flow of 0.1 GPM per
square foot of open area
• Plan your mine drainage and dewatering system
Venting Your Frustrations
• Estimate the amount of face air you will need
• Prepare a year by year schedule showing how much air you will
need where
– Open areas of course need to be swept with air
– If you have a battery recharging area it will also need to be ventilated
– You may have other area needs
• Estimate your leakage and the amount of air you will need
– Look at your shaft and slope openings and check whether they will be
able to reasonably handle the air flows you are appearing to need
• Prepare a general plan for how you will use entries on your panels
and mains for ventilation (ie etries for intakes, returns, and neutrals
{if you have neutrals})
Select Sample Points in Time
• Every 5 years select a point in time where you
will detail your mine wide ventilation plan
– Take at least one of these plans and input it into
Vnet PC (or build a network to solve by hand).
– Work out the air flows and pressure heads
A Belt Network
• Work out your mines detailed belt network at
one point every 5 years
– Use Belt Analyst to plan out and specify the belt
needs
– Identify your belt equipment
After the #6 Coal
• After the #6 coal is mined out you will begin
planning out mining your met coal by longwall
from #3
– Put together your timing for mining out the #3 coal
• As you start mining met coal from #3 you will
keep hold of your steam coal market by mining
the #7 coal.
– Put together the basic plan you will use for mining #7
coal
Preparing the Prep Plant
• Prepare maps showing what areas will be
undermined with your #7, #6, and #3 coal mining
plan
– Identify areas that you consider to be subsidence risk
based on type of undermining and closeness to the
surface
• Prepare or reference maps showing the shafts or
slopes from which coal will be removed
• With this data, locate your preparation plant,
your waste disposal area, and your incoming
railroads or roads that will ship the coal out.
Scheduling Waste Production
• Your #6 coal should have provided you with a coal
quality schedule that includes out of seam
dilution rock
• Prepare a waste preparation plan
– For each coal processing unit that produces a waste
product indicate what type of waste it produces and
how it will be processed for disposal placement
– Prepare a year by year schedule for the volume of
coarse and fine waste produced
• Show by supporting calculation how you got that waste
volume from the feed and the processes it went through
DIAMONDS
Where You Are At
• You have planned a 16 year open pit mine
sequence
• You have planned out your ancillary buildings
and structures (to varying degrees)
• You have put in a basic network of roads
• You have chosen your surface Fleet
Deficiency Reinforcement
• You have a network of guard towers around the
property, but it is not clear how you will get
people to those guard towers – particularly in the
winter
– Add appropriate roads or supplemental equipment to
your fleet as necessary
– Make a plan for a “typical” guard tower that shows
such things as height, floorplan, and facilities
• (Do they have bathrooms, kitchens, could one stay in them
for an extended period if they were cut-off by a storm?)
Include additional facilities on your
maps
• Your maps should show the location of all roads
and buildings
• They should show the “ultimate pits” at the end
of 16 years
• They should show your water and electrical lines?
– It is assumed you will have back-up power (obviously
that high tech security would not be worth much if I
could disable it by shooting down a power line
anywhere between your mine and Cheyenne)
Finalize Facilities Plan
• Office buildings, warehouses, wash-houses,
repair shops, security buildings, processing
plants, backup generation houses should have
basic floor plans
• Due to climate indications of things such as
insulation and type of roof should be covered
somehow.
• Where will trucks and equipment be kept?
• Where are fuel storage areas.
Focus on Your Underground
• Build a basic plan and layout for your
underground mine and draw it out in
MineSight
– Indicate an approximate mining sequence for
what you will mine and when.
– The drawing should include the size of your major
mine openings including shafts, ramps, main
haulage ways, and underground stations.
Operations Decisions for the
Underground
• Weather may be a lesser issue underground
than on the surface.
– What kind of work schedule do you want during
what seasons
– If you elect any winter operations, where will
people stay?
Exploration Related Decisions
• Your basic mining concept includes the idea of mining out
levels by driving and then filling side by side drifts into the
ore body
• A level running at 90 degrees to the previous will then be
put in below.
• Do you want to run just one entry part way into the
orebody at various points to explore in greater depth the
consistency of the reserves and frequency of some of your
large “mega-diamonds”?
– If so develop your underground sampling plan
– (It is highly suggested you use this week to plan out your
exploration drifts rather than an entire underground mining
sequence based on no information)
Basic Equipment Picks for
Underground
• Pick your drill jumbo’s (if applicable – you
might be going with jacklegs)
• Pick your ore haulage equipment
• Pick your powder delivery and loading
equipment
• Pick equipment to deliver men and supplies
underground