PART XVIII EXCAVATION, UNDERGROUND WORK AND ROCK CRUSHING — Excavation or access
407
(1) Where a worker is required to enter an excavation greater than 1.22 metres deep, a ladder shall be provided in the immediate area where the worker is employed, extending from the bottom of the excavation to at least 0.91 metres above the top of the excavation.
407(2)
Walkways entering excavations shall be
407(a)
not less than 50.80 centimetres wide;
407(b)
equipped with guardrails when over 1.22 metres above grade; and
407(c)
provided with cleats when the grade is over 1/6.
407(3)
A runway which is used by mobile equipment shall be equipped with curbs.
Not legal advice. Verify the cited article against the signed agreement.