A sufficient number of men trained in the use of a multi-gas detector shall be employed by the operator, who shall examine the mine for obnoxious and inflammable gases while men are working therein.
225 ILCS 705/6.15
A sufficient number of men trained in the use of a multi-gas detector shall be employed by the operator, who shall examine the mine for obnoxious and inflammable gases while men are working therein.
225 ILCS 705/6.15