Blow-down valves or filling valves shall be located around a corner of the coal pillar except where portable compressor machines are used for breaking down coal.
225 ILCS 705/15.06
Blow-down valves or filling valves shall be located around a corner of the coal pillar except where portable compressor machines are used for breaking down coal
Laws 1953, p. 701.
Official source: Illinois General Assembly. Reproduced from public-domain Illinois statutes; confirm against the official source for the current text. Not legal advice.