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When a mine opening holes through into a permanently supported <br />• entry, room, or crosscut, the intersection so created shall be <br />considered unsupported and no work shall be done in or inby such <br />intersection until either: <br />(i) The newly created opening is permanently supported as <br />indicated in the approved roof control plan, or; <br />(ii) The newly created opening is temporarily supported with at <br />least one row of supports installed on not more than 5 foot <br />centers across the opening. <br />10. No torque test is required for resin bolts. <br />11. Posts installed under roof that is cracked, broken, or <br />susceptible to sloughing shall have a wood cap block, plank, or <br />crossbar between the post and the roof. Where crossbars or <br />planks are installed, they shall be blocked to equally <br />distribute the load across their length. <br />12. Posts shall be installed tight and on solid footing. Not more <br />than two wooden wedges shall be used to install a post. An <br />additional cap block and wedge may be used under the post on <br />steep pitches or soft bottom. <br />13. A supply of suitable roof support material sufficient to support <br />• the roof during one complete cut sequence of mining, (20 feet of <br />place advancement) shall be kept within two (2) crosscuts of the <br />face. <br />14. An additional supply of supplementary roof support material <br />consisting of 4 jacks and pasts shall be provided within X00 <br />feet of the faces. <br />15. A suitable roof sounding device shall be provided with all <br />mobile face equipment, except haulage equipment. If face <br />workmen who are not operators or helpers on such equipment do <br />not carry a roof sounding device, such device shall be available <br />within 50 feet of their working face. <br />16. (a) Where roof falls have occurred and at all overcasts, boom <br />holes, and other construction sites that require removal of mine <br />roof material, (e.g., by blasting, by ripping with a continuous <br />mining machine, by cutting with a cutting machine, or any other <br />means), the roof shall be considered unsupported. If miners are <br />required to enter such areas, either to travel over the fallen <br />material, to clean it up, or to perform other duties, the roof <br />shall be supported adequately. Mine management shall devise and <br />have posted in writing at the scene of such unsupported rcof a <br />plan incorporating the following procedures: <br />. (i) Such work shall be under the direct and, unless the miners <br />are specially trained to do such work, constant supervision <br />of a certified person. <br />-6- <br />