PART XVIII EXCAVATION, UNDERGROUND WORK AND ROCK CRUSHING — Falling ground
416
(1) The walls, roof and face of an underground working shall be kept free of loose or fissured rocks and stones, and ground support shall be installed where necessary.
416(2)
An adequate supply of properly dressed scaling bars or other scaling equipment shall be available at the worksite for scaling.
Not legal advice. Verify the cited article against the signed agreement.