All rubber-tired or crawler-mounted self-propelled scrapers front-end loaders, dozers, cranes, loaders and tractors, with or without attachments, at the surface work areas of underground coal mines shall be provided with rollover protective structures, in accordance with the certification requirements approved by MSHA.
25 Pa. Code § 208.155
The provisions of this § 208.155 issued under sections 106 and 106.1 of the Bituminous Coal Mine Safety Act (52 P. S. §§ 690-106 and 690-106.1).