053-3 Wyo. Code R. § 57.22204
Current through April 27, 2019
Main fans shall be-
(a) Provided with a pressure-recording system; and
(b) Inspected daily while operating if persons are underground. Certification of inspections shall be made by signature and date. Certifications and pressure recordings shall be retained for at least one year and made available to an authorized representative of the Secretary and the State Mine Inspector.
053-3 Wyo. Code R. § 57.22204
52 FR, 24941, 7/1/1987, as amended at 52 FR 41397, 10/27/1987
Approved by the Office of Management and Budget under control number 1219-0030