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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 OS-02820 <br />77.1900 (A)(2) Operator <br />Wyoming Fuel Company <br />10250 Highway 12 <br />Weston, Colorado 81091 <br />(719) 868-2761 <br />77.1900 (A)(3) Description of Construction <br />The shaft will be constructed by: <br />Dynatec *Sining Contractors Inc. <br />12567 West Cedar Drive, Suite 100 <br />Lakewood, Colorado 80228 <br />MSHA I.D. No. WJ6 <br />The planned construction method for the shaft is to <br />construct a temporary shaft collar, drill a pilot hole <br />into the mine, attach the raise head and upream tc fnll <br />excavation diameter of 9 feet 3 inches. The raise dri'_1 <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 draw the atmosphere from the level of the raise <br />bcrer 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 follcwing lists the specifications for the <br />centrifugal fan to be used: <br />Mfg. Dayton <br />Model X820 <br />Type Centrifugal <br />Speed 3450 RFM <br />Horsepower 1;3 hp <br />Voltage 110 v <br />Catalog specification sheet attached. <br />The muck from the shaft excavation -gill be rer„„owed from <br />th E Shaft }..CttCm by C1e521 SCOOjJS Or COritlnllOllS mincr. <br />The operato, gill not be allowed within 8 ~eet of the <br />shaft wall. <br />~. Revised 1/26/91 <br />l~~P~O~~~ GAS & H ~tP~4 C-~ a ~~ ~ <br />1`iW-1 exhaust Shaft 5 ~ ~~ <br />