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2000-06-28_PERMIT FILE - C1981010A
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2000-06-28_PERMIT FILE - C1981010A
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Last modified
3/29/2021 7:52:03 PM
Creation date
1/16/2008 1:05:10 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981010A
IBM Index Class Name
Permit File
Doc Date
6/28/2000
Section_Exhibit Name
3.0 Project Plan
Media Type
D
Archive
Yes
Tags
DRMS Re-OCR
Description:
Signifies Re-OCR Process Performed
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• A list of the major equipment used at the Trapper Mine to perform the various mining and reclamation <br /> operations is shown on Table 3.1-2. Variations to this list may occur, but the list is a representation of the <br /> general types of equipment that will be used. <br /> Table 3.1-3 lists the maximum yearly amount of disturbance and reclamation in acres projected for the <br /> current permit term. <br /> Prior to any mining or other disturbance,the area may be Geared of brush utilizing dozers, or on occasion <br /> and with prior approval from the Division, a prescribed bum. As an integral part of reclamation, topsoil is <br /> removed and placed directly on regraded spoils when available of stored in stockpile for later <br /> replacement. <br /> After the topsoil has been removed, the overburden is drilled utilizing rotary blast hole drills. This opera- <br /> tion is Initiated with the construction of drill pads. Drill pads are terraced benches built parallel to the <br /> strike of the hillside with dozers. These are required to provide a level area for the drills to operate on. <br /> Overburden is drilled to the top of the first coal seam to be mined requiring holes varying from 15 to 150 <br /> feet deep. Depths may increase depending upon future economic stripping limits. Holes are drilled on <br /> varying patterns according to the depth of hole and type of material encountered. <br /> Dry holes are loaded with a bulk ammonium nitrate and fuel oil (ANFO) mix Emulsion blasting agent <br /> • (emulsion-ANFO mix) is used in wet holes. Multiple detonators are used to ensure proper detonation. <br /> Optimum fragmentation with minimum seismic disturbance is obtained by using detonating delays (refer <br /> to Section 3.4). Immediately prior to detonation, the blast circuit Is established and then the blast is <br /> initiated. <br /> The operation which follows blasting in the mining sequence is stripping, which is primarily accomplished <br /> with draglines. The draglines are assisted by dozers which perform such-functions as clean-up, dragline <br /> pad preparation and cable moves. <br /> 3-12 - <br /> ---- P AI 1 Z. 1998- <br />
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