225 ILCS 705/27.02

In all mines in this State which are classified as non-gassy by the State Mine Inspector, and where coal is broken down by the use of explosives, a sufficient number of first-class miners, who are citizens of the United States or lawfully admitted for permanent residence, shall be designated and employed as drillers and shooters or as shot firers. The duties of the drillers and shooters or shot firers shall be to prepare permissible explosives for breaking down coal in a safe, practical and workmanlike manner, and to fire or detonate the same.