My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
2011-03-09_PERMIT FILE - C1981018A (2)
DRMS
>
Day Forward
>
Permit File
>
Coal
>
C1981018A
>
2011-03-09_PERMIT FILE - C1981018A (2)
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
8/24/2016 4:31:35 PM
Creation date
4/4/2011 10:57:50 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981018A
IBM Index Class Name
Permit File
Doc Date
3/9/2011
Section_Exhibit Name
Section III. Mine Description
Media Type
D
Archive
Yes
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
38
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
View images
View plain text
10 -5/8 inch holes (LW2 -1 to LW2 -8, LW2-4B and LW2 -6B) were drilled in the longwall #2 and <br />• eleven holes (LW3 -1 to LW3 -11) were drilled in the longwall #3. Disturbance of the archaeological <br />site 5RB859 was mitigated. Hole LW3 -12 in the longwall #3 and holes LW4 -1 to LW4 -13 in <br />longwall #4 were drilled in 1990. Holes LW4 -14 to LW4 -17 and LW5 -1 to LW5 -17 were drilled in <br />1991. Holes LW5 -8 to LW5 -15 and LW6 -1 to LW6 -3 were drilled during 1992. Vent holes LW64 <br />to LW6 -12 and LW7 -3 to LW7 -5 were drilled during 1993. Holes LW7 -6, LW7 -8, LW7 -10, LW8 -2, <br />LW8 -3 and LW8 -5 were drilled in 1994. LW7 -1 and LW7 -2 were permitted but not drilled because <br />of the change in the start line location for LW -7. Holes LW7 -7, LW7 -9, LW8 -1, LW84 and LW8 -6 <br />were permitted but not drilled. On January 31, 1996, the mine caught fire near LW -9 face. <br />Emergency holes LW9 -1 and LW9 -2 were drilled to inject CO2. The working districts were <br />eventually sealed. Drill hole LW9 -3 was drilled to monitor mine gases and assess the fire <br />condition. Vent hole LW10 -1 thru 7 were drilled in 1997, LW11 -1 thru 4 in 1997, LW11 -6, LW12 -1, <br />3, and 5 in 1998, LW137 -1 thru 4 in 2005, LWB9 -2 and 3 in 2007, LWB10 -1 thru 4 in 2008, LWB11- <br />1 thru 4 in 2009, and LWB12 -1 thru 5 in 2011. Degasification holes are utilized as necessary to <br />ventilate longwall gob gasses from active panels and mining districts. <br />Spontaneous combustion forced extensive drilling to locate and control the resulting fire in 2007. <br />Nineteen drill holes on 18 drill pads were constructed to address this issue (SC -xxxx holes). A <br />skid mounted nitrogen generating unit with compressors and associated buildings were installed at <br />RDH -3 (see Map 155) with a 3" surface pipeline (6900') strung to SC -HG20, 26, and 33. A 575 <br />foot 2" pipeline was strung to SC -HG17. Nitrogen is injected to help inert the mined out areas. <br />Nitrogen injection and monitoring holes are required by MSHA for subsequent longwall panels. <br />N7 -53; N8 -12, 21, 36, 51, and 55; N9 -12, 26, 38, and 57; and N10 -12, 26, 38, and 53 were drilled <br />to the 7 th thru 10 Left entries. 14,465 feet of 3" surface pipeline carry nitrogen to these holes. <br />Drill locations are shown on Map 147. Accesses to the locations are along existing roads where <br />feasible. New roads are constructed where necessary. <br />The two -track access to LW2 -1 from LW2 -2, is about 1/2 -mile long. Part of the track is <br />constructed around the side of a hill necessitating approximately 60 feet of the track to have a cut <br />ranging up to 6 feet deep. The track width is maintained around 12 feet. The only disturbance of <br />any significance was for the cut to be made on the side of the hill. Some rock blasting was <br />required. An 18 -inch culvert was installed on the access road to well LW2 -1. <br />The drill sites are about 100' x 100'. A site is formed by first salvaging available topsoil. The <br />topsoil is stockpiled at one end of the drill site. Additional earthwork is minimized since the drill <br />sites are usually relatively flat. A temporary mud pit is constructed next to the drill site. All suitable <br />40 Minor Revision #145 (01/2011) III -27 <br />` 6" <br />
The URL can be used to link to this page
Your browser does not support the video tag.