§ 33.242. Determination and record.
(a) Each day the cavern superintendent or foreman shall measure the quantity of air in circulation in the cavern by an anemometer or other efficient instrument. This measurement shall be made at the inlet and outlet airways. The results of these measurements shall be entered in the cavern ventilation report book.
(b) The contractor, operator or superintendent of each cavern shall insure that a mine ventilation report book is provided and that the measurements of air as required in subsection (a) are taken each week and recorded in the report book.
(c) The mine ventilation report book shall always be kept available for inspection by the Department or its authorized representative.
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