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<br />D. SECTION MINING CYCLE f ~~ '`'~~~"` (' ~ (:, - <br />! • 1, Roof bolting will nortnaily be pefonned on the intake air side of the <br />l continuous miner and/or on the opposite split on a double split sec- <br />tion, <br />2, The maximum distance an entry, crosscut or room may advance inby the <br />breakthrough before the next breakthrough is made will vary by pil- <br />lar dimensions, but in no case will this distance exceed the ]imita- <br />tions of tubing as mentioned in the Auxiliary Fan Section, <br />3. Breakthrough should be made from intake side to the return side un- <br />less steps are taken to prevent dust from passing over the miners. <br />• <br />• <br />Initial 11/01/86 <br />