§ 33.37. Chains and cables.

 (a)  Required strength. All chains and cables used in and about all pits or quarries shall be of a size sufficient to sustain the maximum load hoisted out of a pit or quarry with a factor of safety of five. The use of chains or cables which do not sustain the maximum load is prohibited.

 (b)  Open rings prohibited. The use of open rings, or open links on block, rubbish, man box, skip or car chains is prohibited.

 (c)  Other regulations. Chains and cables used in pits or quarries for hoisting purposes shall comply in all other respects with the requirements for chains and cables found in Chapter 25, Subchapter B (relating to cranes, booms and hoists).

 (d)  Inspections. All block, rubbish and man box chains used in a deep pit or slate quarry and all cable and spreader chains used on a plane in a side hill quarry shall be inspected at least once each week by a competent person, preferably the blacksmith or hook-on. All cables used in a pit or quarry for hoisting men or materials shall be inspected at least once a week by a competent person.

 (e)  Inspection book. Each quarry shall maintain a chain and cable inspection book which shall contain the result of each weekly inspection. This book shall always be kept available for inspection by the authorized representatives of the Department. The owner, operator or superintendent of each quarry shall insure that weekly inspections are made, that inspection books are provided, and that the results are noted in the book.