Said air lines when new and first installed, shall be tested to withstand an approximate minimum pressure of 20,000 pounds per square inch.
225 ILCS 705/15.01
Compressed air shall be conducted from surface compressors, except as provided in Section 15.11, to within a practical working distance of the face by air lines
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.