Ala. Code § 25-9-191: Installation, Etc., of Timbering or Other Roof Support Systems.

(a) Timbering or other adequate roof support systems suitable to the roof conditions and mining system of each mine or part of a mine shall be adopted, complied with, and required. Additional timbering or supporting will be done where necessary.

(b) It shall be the duty of the mine foreman and his subordinate supervisors to ascertain that all workmen are trained in the proper methods of setting timbers or placing supports.