PERMFILE66367

• Permit No: M1977346
• IBM Index Class Name: Permit File
• Doc Date: 2/16/1982
• Doc Name: REGULAR 112 PERMIT APPLICATION FORM
• Media Type: D
• Archive: No

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• EXHIBIT D •
MINING PLAN
Quarries on this property are the source of gypsum under
MLRB 110 Permit 77-346,.' din the manufacture of Portland
Cement at Ideal's Boettche .~,1ant located 19 miles south.
This conversion will allow other outcrops on the property to
be mined.
The gypsum occurs in 12-15 foot thick discontinuous beds
which lie at attitudes from horizontal on the Greenacre Anti-
clinal Axis to 30° dip on the flanks of the anticline. The
method of quarrying is as follows:
1. A cut is opened along the strike of the bed at: the point
where no more than 12-15 feet of cut will bare: the top of
the gypsum bed.
2. The gypsum is blasted and loaded onto trucks prith a
power shovel.
3. The material is hauled to a crushing and screening facility
where it is upgraded, then stockpiled for hauling to
the plant.
4. When the initial cut is completed across the outcrop,
any overburden over the next cut updip is doze~.d off
into the area of the completed cut and the blasting,
hauling, processing, stockpiling, hauling cycle is repeated.
5. This cycle is repeated to the top of the outcrop.
6. The discontinuous nature and varying chemical composition of
the gypsum beds make a detailed mining plan iupossible.
The Boettcher plant operation uses approximately 16,000 tons of
gypsum annually, which disturbs approximately 0.4 acre per year.
The quarry operates less than 180 days per year.
Mining equipment used in the operation includes air drills,
bulldozers, power shovel, front end loaders, a portable crushing
and screening unit, and diesel-electric generators to supply the
electrical energy for lighting and powering the crush<:r-screening
equipment.
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