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Chapter V <br /> found in steep, forested terrain which is inaccessible to equipment. Available on-site <br /> rock and timber will be used with the objective of slowing flow velocities, and to allow <br /> the gullies to stabilize to the extent possible. <br /> Straw Bale Check Dams. These are readily employed , easily transported, and provide <br /> good sediment control for small, limited areas. When installed on steep slopes, the <br /> dams are generally staked into the ground with roof bolts. <br /> d. Portal Benches <br /> The operator will carry out a program at the portal bench areas to clean up and dispose <br /> of non-coal waste materials, demolish and remove or repair structures damaged by the <br /> elements, and consolidate equipment and materials for which future use is anticipated. <br /> Work was done at Mines #1 and #2 in 1991. The schedule for completion of work at <br /> the other portal benches is as follows: <br /> #4 Mine 1993 <br /> #5 Mine 1994 <br /> #3 Mine 1995 <br /> Portal benches are required for use in the mining operation, as follows: <br /> Mines #1 and #2 Portal Benches <br /> Ventilation fans and escapeways, roof support system. <br /> Mine #3 <br /> Operations planning anticipates extraction of coal from #3 mine, which is not accessed <br /> by the rock tunnel. <br /> Mine #4 <br /> Operations planning anticipates a program for degassification of the coal ahead of <br /> mining. The #4 portal bench is required as a staging area, and the road from #4 Mine <br /> across Huntsman Ridge is required for access to the land above the underground <br /> workings. <br /> Mine#5 <br /> May be required for access to an unmined block of coal in the M-bed seam. <br /> 20 <br /> Revised 6/92 <br />