Ill. Admin. Code tit. 62, § 225.70 - Ventilation
a) The quantity of
air reaching the last open crosscut in any set of entries must be greater than
or equal to 9,000 cubic feet per minute; if diesel equipment is used, then the
quantity of air reaching the last cross-cut must meet the standards of 62 Ill.
Adm. Code
220.230(g)(3).
b) In any working face where coal is being
penetrated or loaded as a result of permissible explosives, the air sweeping
the work face must be greater than or equal to 3,000 cubic feet per minute at
all times persons are working at the face.
Notes
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