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GENERAL30772
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Last modified
8/24/2016 7:48:14 PM
Creation date
11/23/2007 6:48:16 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981018
IBM Index Class Name
General Documents
Doc Date
5/13/2002
Doc Name
County Special Use Permit Application - 9/200
Permit Index Doc Type
Other Permits
Media Type
D
Archive
No
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through the working area. It operates 24 hours per day, 365 days per year, with the exception of <br />scheduled maintenance periods. Detailed plans for the ventilation of the underground working areas <br />have been approved by MSHA. A ventilation shaft was constructed in the B Seam that will be an <br />exhausting return air shaft. The raised bored shaft is about 210 feet deep and 12-feet in inside <br />diameter. The shaft opening is covered with aheavy-duty screen to control unauthorized access. The <br />shaft site is 100'x200'. Alight use road approximately 2410 feet long has been constructed from the <br />existing mine haul road to the shaft site. In anticipation of possible future power requirements for the <br />area, approximately 3400 feet of overhead electric utility lines may be installed. Several additional <br />smaller diameterair shafts are anticipatedto be needed as mining in the B Seam progresses. <br />During early 1987, gassy conditions were encountered at the Deserado Mine. To relieve those <br />conditions, BME drilled a 12-1/4 inch hole (LW1-1) and six (6) 10-5/8 inch holes (LW1-2 to LW1-7) into <br />the gob created behind the protective shield of the longwall 1. In September, 1988, a vent hole <br />(LW1-8) was drilled to relieve methane gas in the sealed area of the longwall panel #1 in order to <br />improve ventilation in other working areas of the mine. As of January, 1990, an additional ten (10) <br />10-5/8 inch holes (LW2-1 to LW2-8, LW2-4B and LW2-6B) were drilled in the longwall #2 and eleven <br />holes (LW3-1 to LW3-11) were drilled in the longwall #3. Disturbance of the archaeological site <br />5RB859 was mitigated. Hole LW3-12 in the longwall #3 and holes LW4-1 to LW4-13 in longwall #4 <br />were drilled in 1990. Holes LW4-14 to LW4-17 and LW5-1 to LW5-17 were drilled in 1991. Holes <br />LW5-8 to LW5-15 and LW6-1 to LW6-3 were drilled during 1992. Ventholes LW6-4 to LW6-12 and <br />LW7-3 to LW7-5 were drilled during 1993. Holes LW7-6, LW7-8, LW7-10, LW8-2, LW8-3 and LW8-5 <br />were drilled in 1994. LW7-1 and LW7-2 were permitted but not drilled because of the change in the <br />start line location for LW-7. Also holes LW7-7, LW7-9, LW8-1, LW8-4 and LW8-6 were permitted but <br />not drilled. On January 31, 1996, the mine caught on fire near LW-9 face. Emergency drill holes LW9- <br />1 and LW9-2 were drilled to inject COz. The working districts were eventually sealed. Drill hole LW9-3 <br />was drilled to monitor mine gases and assess the fire condition. Venthole LW10-1 through LW10-7 <br />were drilled in 1997. Venthole LW11-1 to LW11-4 were drilled in 1997. Ventholes LW11-6, LW12-1, <br />LW12-3, and LW12-5 were drilled in 1998. Degasification holes were utilized as necessary to degas <br />the undergroundworking inthe DSeam. <br />The vent holes located within Longwall Panels #1 through #10 are shown on Map 1, Surface Facilities <br />Map. Access to the locations are along existing roads and from there to hole locations by cross <br />country at-grade access with minimal blade work only where necessary. <br />The drill sites are about 100' x 100'. A site is formed by removing about one foot of topsoil. The topsoil <br />is stockpiled at one end of the drill site. Additional earthwork is minimized since the drill sites are <br />usually relatively flat. A temporary mud pit is constructed next to the drill site. All suitable topsoil <br />Rio Blanco County Special Use Permit#81-1 <br />EzhibitB-Mining Plan <br />September2000 <br />14 <br />
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