Only permissible multi-gas detectors or air sampling and analysis shall be used for determining the presence of methane and other gases in mine air.
225 ILCS 705/25.01
Multi-gas detectors and a barometer, all in proper working condition, shall be kept available at each mine for the use of authorized persons
P.A. 99-538, eff. 1-1-17.
Official source: Illinois General Assembly. Reproduced from public-domain Illinois statutes; confirm against the official source for the current text. Not legal advice.