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~ a <br />/ ~ n <br />E. Methane Control in Active Areas ~ •"~•-' •`' •- ~• ::.. „•,~ } ~ j 'f' <br />~ •,.I <br />1. The methane content in the air in active workings shall be less than <br />1.0 percent. <br />2. If any any time the air in any of these active workings exceeds 1.0 <br />percent. changes or adjusments shall be made at once in the ventila- <br />tion so that the air contains less than 1.0 percent <br />• <br />r. <br />K <br />'= ~~ ~ <br />'~. ; <br />,. <br />~: <br />Initial 11/01/86 <br />