This area was developed in the late 1970's and had approximately 600' of cover. Several falls existed in the immediate area. The area had been bolted with 5' resin bolts and supplemented with 8' conventional bolts. The roof consisted of laminated shale and the fall occurred several feet above the anchorage. This was an extension of a previous fall in an adjacent crosscut.
Supplemental supports are to be added in the surrounding area.
Use additional roof support cribs, posts, timbers or steel beams where conditions warrant or indicate. Make consistent and thorough observations of the roof during mine examinations.