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_GENERAL DOCUMENTS - C1981017 (230)
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_GENERAL DOCUMENTS - C1981017 (230)
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Last modified
11/2/2020 10:10:30 AM
Creation date
6/19/2012 2:58:31 PM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981017
IBM Index Class Name
GENERAL DOCUMENTS
Doc Name
Bid Documents (IMP) 1999 Correspondence
Permit Index Doc Type
General Correspondence
Media Type
D
Archive
No
Tags
DRMS Re-OCR
Description:
Signifies Re-OCR Process Performed
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mining would be re-initiated. Mining operations continued until the early part of this century, <br /> when the Mine was shut down. Eventually, the town of Coal Basin fell into disrepair, and now <br /> only a few foundations are left. The rails were taken up during World War two, thus ending the <br /> early mining operations in Coal Basin. <br /> Coal mining resumed in Coal Basin when Mid-Continent Coal and Coke opened the Dutch <br /> Creek Number 1 Mine in 1956. Mine Number 2 was opened in 1965,with Mines 3, 4 and 5 <br /> opening between 1966 and 1974. Mid-Continent Resources eventually succeeded Mid-Continent <br /> Coal and Coke as the owner and operator of the mining complex. The various mines were <br /> intermittently operational through the end of 1990. In early 1991, mining at Coal Basin ceased <br /> altogether. <br /> OPERATIONS <br /> The Coal Basin Mines were an assemblage of five underground coal mines. The mines were <br /> located throughout Coal Basin, the separation between the southern most and northern most <br /> mines being about three miles as the crow flies. Each mine consisted of up to about ten separate <br /> entries, including ventilation portals. The mines were generally located on the steep eastern <br /> flank of Huntsman Ridge at an elevation of 10,000 feet. In order to easily access the coal seam, <br /> a vertical cut, or highwall, was excavated into the cliff faces at Mines Number 1 through 4. The <br /> highwalls vary in size from mine to mine, but at Mines 3 and 4 they are generally over 100 feet <br /> high, and at least two hundred feet in length. The highwalls and benches at Mines 2 and 5 were <br /> constructed using similar construction techniques,however the features are smaller at these <br /> locations. A large, flat pad for construction of buildings and storage of equipment was <br /> constructed in front of the highwall at each mine . <br /> In order to create the highwall and pad configuration,thousands of cubic yards of rock and dirt <br /> were excavated and disposed of over the side of the mine benches, creating long steep mine <br /> bench outslopes. These mine bench outslopes, which are at the center of the current litigation, <br /> are long, steep slopes consisting of unconsolidated earthen materials. In some places, the slopes <br /> also contain significant amounts of trash and mine related reject materials. The slopes vary in <br /> size from less than one acre to over eight acres. Slope lengths vary between 100 feet and 900 <br /> feet, with 400 feet to 500 feet being an estimated average length. The upper portions of the <br /> slopes (those immediately below the mine benches) approach the angle of repose (almost too <br /> steep to walk on), and flatten slightly near their base. Little to no vegetation grows on these <br /> slopes, and due to this fact, as well as to their physical characteristics and the high annual <br /> precipitation,they are subject to large scale erosional processes. <br /> When the coal was extracted, it was transported from underground to the mine entries via a <br /> conveyor belt system. From the mine entries, the coal was hauled by truck to a wash plant <br /> facility located at elevation 8,000 feet near the confluence of Coal and Dutch Creeks. <br /> Approximately fifteen miles of haul roads, averaging forty five feet in width, connected the <br /> various mines to the wash plant area. Impurities were washed out of the coal, and then the raw <br /> coal was dried before being transported by truck to the rail loadout in Carbondale. <br /> The impurities washed from the coal, mainly sandstone and shale intermixed with coal particles, <br /> 2 <br />
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