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INSPEC12735
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INSPEC12735
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Last modified
8/24/2016 9:14:27 PM
Creation date
11/18/2007 8:57:20 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981033
IBM Index Class Name
Inspection
Doc Name
Inspection Report
Inspection Date
7/20/2004
Media Type
D
Archive
No
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portals area. <br />BCC constructed facilities for the operation of the mine. A sediment control system was built, <br />comprised of a sediment pond, culverts, ditches and a flood control berm along the river. A mine <br />office/bathhouse, shop, two warehouses and a substation with transformer and powerlines were <br />constructed on the level facilities area. On the steep hillside where the Bear No. 3 portals were located, <br />a ventilation fan was positioned at the east portal. Also on the hillslope, a conveyor system brought <br />coal down to the facilities azea, where a stacker tube for the stockpiling of coal was located. Two light <br />use roads led from the portal access road to the conveyor. A reclaim tunnel under the coal stockpile <br />was used to bring coal up from the coal stockpile to a loadout bin for the loading of coal haul trucks. <br />An above-ground fuel facility was also constructed on the facilities area. Certain zones of the facilities <br />azea were designated for the temporary placement of non-coal waste, coal waste material, topsoil and <br />mine equipment. There was no permanent storage of coal waste on site. Rather, the coal waste was <br />permanently stored in the coal waste pile at the Sanborn Creek Mine. After construction of the Bear <br />No. 3 Mine facilities was completed, mining in the C-seam progressed until reserves in that coal seam <br />were exhausted. <br />After the reserves in the C-seam were mined out, BCC then ramped down from the C seam workings <br />to the B-seam coal. This ramp entered the B-seam at a point approximately 300 feet south of the <br />southernmost extent of the Edwards/Clazk Mine B seam workings. This meant that a barrier of 300 feet <br />of coal was left in place between the Bear No. 3 Mine B seam workings and the Edwards/Clazk Mine B <br />seam workings. Mining then progressed in the B seam, with panels essentially directly below the Bear <br />No. 3 Mine C seam panels. With most of the B seam coal reserves already mined out, BCC decided to <br />close the Bear No. 3 Mine when a large cave-in made further mining uneconomical. Permanent seals <br />were installed at various points in the Bear No. 3 Mine B seam mine workings. <br />On November 11, 1996, BCC permanently ceased all mining operations at the Bear No. 3 Mine due to <br />geologic conditions encountered throughout the mine. The status of the Bear No. 3 Mine became <br />"inactive." All three C seam portals at the Bear No. 3 Mine were sealed on January 9, 1997. Drainage <br />pipes were installed through each of the portal seals so that mine water would not build up behind the <br />portal seals. During 1997, the two warehouses and shop building, mine fan, portal bench transfers, <br />conveyor structure, stacking tube, substation and miscellaneous mine equipment and debris were <br />removed. The mine office building, paved access road, bridge and fence remain as approved in the <br />permit. The Bear No. 3 portals were backfilled according to Mine Safety and Health Administration <br />requirements, and the mine benches and bench access roads were backfilled and regraded during June <br />and July of 1997. The facilities bench was regraded and topsoiled in 1998. The disturbed azea was, <br />then, reseeded, also in 1998. A sedimentation pond with one collection ditch and one culvert and a <br />spring water treatment pond remain on site. The approved post mining land use is limited residential <br />and undeveloped land. <br />There aze three phenomena occurring at the Beaz No. 3 Mine that aze important considerations. First, <br />there is evidence of a mine fire at this site. After observations of smoke/steam and the odor of <br />smoldering coal, the Division had requested that the Colorado Inactive Mines Program (IMP) <br />investigate this matter. In October of 2003, Steve Renner of the IMP visited the site and found <br />evidence of a mine fire in the immediate vicinity of the reclaimed Beaz No. 3 portal bench and portals. <br />A copy of Steve Renner's memo is attached to this inspection report. As discussed later in this <br />inspection report, there is a possibility that this mine fire may be affecting the stability of the <br />reclamation work. It is a public safety concern as well. <br />3 <br />
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