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77.1900 Shaft Construction Plan <br />77.1900 (A)(1) Mine <br />Golden Eagle Mine <br />Weston, Las Animas County, Colorado <br />MSHA ID Number 05-02820 <br />77.1900 (A)(2) Operator <br />Wyoming Fuel Company <br />10250 Highway 12 <br />Weston, Colorado 31091 <br />(719} 863-2761 <br />77.1900 (A)(3) Description of Construction <br />The shaft will be constructed by: <br />Dynatec Mining Contractors Inc. <br />12567 West Cedar Drive, Suite 100 <br />Lakewood, Colorado 80228 <br />bISHA I.D. No. WJ6 <br />The planned construction method for the shaft is to <br />construct a temporary shaft collar, drill a pilot bola <br />into the mine, attach the raise head and upream to full <br />excavation diameter of 9 feet 3 inches. The raise drill <br />will be equipped with a centrifugal fan attached to the <br />drill steel via the water swivel and a bull hose. The <br />fan will drag the atmosphere from the level of the raise <br />borer head thru the drill steel and exhaust it at the <br />well head. During reaming, the methane concentration. of <br />the fan exhaust will be checked continuously with a <br />methane detector. The inlet of the fan will be equipped <br />with a flame arrestor to prevent a problem should the fan <br />fail. The following lists the specifications for the <br />centrifugal fan to be used: <br />Mfg. Dayton <br />Model 2C82O <br />Type Centrifugal <br />Speed 3450 RPM <br />Horsepower 1/3 hp <br />Voltage 110 v <br />Catalog specification sheet attached. <br />The muck from the <br />the shaft bottom <br />The operator will <br />shaft wall.' <br />'~. Revised 1/26/91 <br />DiW-1 Exhaust Shaft <br />shaft excavation will be removes from <br />by diesel scoops or continuous miner. <br />not be allowed within 8 =eet of the <br /> <br />