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SAFETY PROCEDURE FOR INSTALLING TEMPORARY SUPPORT . 1. Only persons engaged in installing temporary support will be allowed to proceed beyond the last permanent support until such temporary supports are installed. 2. e) Timber posts or props used as temporary or permanent support will be installed tight on solid footing, and at least one, but not more than tw , wooden wedges will be used to install a post. b) Posts installed under roof that is cracked, broken, or susceptible to sloughing shall have a wooden cap block, plank, or crossbar be- tween [he post and the roof. 3. All metal jacks will be installed with a cap block between [he jack and the roof unless a bearing plate (of not less than 36 square inches) is provided. 4, kfiere loose material is being taken down, a minimum of two temporary sup- ports on not more than five-foot centers will be installed between the workmen and the material being taken down unless such work can be done from an area adequately supported by permanent roof supports. 5. Where bolts are being replaced in isolated instances (such as where equip- ment has knocked bolts loose) and the location is greater than five feet from a face, rib, ar another bolt, one temporary support shall be in- stalled within a radius of 2 feet from each bolt [o be replaced. 6, Where crossbars or roof bolts are being installed in en area were roof failure is indicated, a minimum of one row of temporary supports shall be installed on not more than 5-foot centers across the place, unless the ATS System is deployed, so [hat the work in progress is done between the in- stalled temporary supports and adeouate permanent supports in sound roof. 7, Mfi ere falls have occurred and at all overcasts and other construction sites that require removal of mine roof material, the roof will be consid- eyed unsupported, If persons are required to enter such areas, either [o Page Ten Initial 11/01/86