For the purpose of this and the succeeding sections, the term "timbers" shall be held to include and mean all wood to be used by the miner, or all steel or concrete material used in lieu of timber.
225 ILCS 710/45.21
It shall be the duty of the operator to see that all miners in the mine are supplied at all times with such timbers as are necessary to keep their working places in a safe condition
Known as the Fluorspar Mines Act
The act spans §§ 225-710-1 to 225-710-9-02 (122 sections).
Laws 1945, p. 1035.
Official source: Illinois General Assembly. Reproduced from public-domain Illinois statutes; confirm against the official source for the current text. Not legal advice.