21. Other equipment: Any other machine used for forestry operations shall be equipped with all required safety devices. In particular:
(a) it shall be equipped with guards on all mobile parts and a screen to protect against any projections;
(b) machines whose operating mechanisms are hydraulic shall be equipped with devices which lock any clamps, knives or other equipment in fixed positions for maintenance, cleaning or repairs;
(c) it shall be equipped with chemical extinguishers that are readily accessible;
(d) it shall be equipped with ladders necessary for workers for access, operation and maintenance;
(e) any catwalk and platform shall:
i. be equipped with guardrails; and
ii. have a non-skid floor.