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~:~ <br />~ :: Y; <br />•- 2.05.3(3) (b) (i) (A) <br />are greased, spillage is cleaned, and the area is rockdusted when <br />necessary. <br />Plans for the removal of the belt portal include taking out the <br />belt structure and sealing the entry as approved by DiSHA, Refer <br />to the Reclamation Plan, Section 2.05.4, for more specific details. <br />(B) Intake Portal. <br />The intake portal had no support and needed extensive clean up <br />when Grand t4esa Coal Company acquired the mine. During the summer <br />of 1979, this entry was cleaned and bolted. This portal has a <br />30 foot highwall straight up above it. A 12 foot semicircular <br />multiplate arch on a four foot stem wall was used to extend the <br />portal out 44 feet. This arch was back filled with material <br />• excavated from the access, to the portal. The intake portal is <br />presently used for access to the underground mine by the miners. Men <br />enter the mine is rubber tired diesel vehicles and are transported to <br />the working section. This portal is also the main intake for the <br />mine.'The 'quantity of air entering the mine through the intake portal <br />is 80,000 cubic feet per minute. The cross-sectional area of <br />the intake portal is 108 square feet; and the air velocity is <br />approximately 740 feet per minute. The intake portal is inspected <br />daily by certified mine personnel, <br />The area is rockdusted, the roadway watered and the roof rebolted when <br />necessary. Plans for .the removal of this portal include sealing <br />the portal according to plans specified by MSHA. Fefer to the <br />Reclamation Plan, Section 2.05.4, for more specific details. Refer <br />to the Affected Land Map, 2.04.3(2)(a)-2, for the location of the <br />intake portal. <br />(ii) Mine Office. <br />• Grand Mesa Coal Company's mine office is part of an old residence. <br />The area was cut and filled in the 1930's for part of a farm. The <br />14 by 70 foot trailer home on this cleared and leveled area serves <br />00 <br />