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_~ <br /> <br />:` <br /> <br />.. ~ ~~• <br /> :;r <br />. <br /> ••;r <br /> <br />4. As required by :r:~5' <br />75.319, each mechanized mining, -•~"~: <br />section shall be ventilated with a separate:.~~= <br /> <br />split of intake +: w <br />air directed by overcasts; un-:':ti•. <br />dercasts or the equivalent. ~ '~,'' <br />: <br />5. As required by 75.1709, each working. mechanized:: <br />~~' <br />mining section shall be provided with two sepa-."y~~ <br />rate and dist inct travelable passageways for;',:j` " <br />i <br />escapeway purpo ses. '~' <br />6. The sequence of establishing ventilation is:'';±~ <br />~ <br />shown in proper order on Pages 3A, 31, 32 and 33.'-~~r. <br />of this Plan. ;;~~;• - <br />3. Re-Entry Plan for Abandoned or Sealed Areas ''~i <br />(Reserved) `" <br />There are no plans to re-enter any abandoned or <br />sealed areas. ~,`} <br />H. Methane Control in Active Areas <br />1. The methane content in the air in active workings;: <br />(except those active work areas specifically. ad-:, <br />dzessed elsewhere in the plan or 30 CFR 75) shall:.be` <br />less than 1.0 volume per centum. Tf at any time 'the.' <br />air in any of these active workings contains,l.0': <br />volume per centum or more of methane, changes.or' <br />adjustments shall be made at once in the ventilation~,• <br />in .the mine so that air shall contain less than. l•.0':; <br />volume per centum of methane. ,:;;;i <br />`,`'b .'.'.~.'lY' <br />:}~ <br />G17', <br />:-.k <br />;:/~ <br />~-; <br />';- <br />i <br />:; <br /> <br /> <br />