30 CFR 75.326 - Mean entry air velocity.

§ 75.326 Mean entry air velocity.

In exhausting face ventilation systems, the mean entry air velocity shall be at least 60 feet per minute reaching each working face where coal is being cut, mined, drilled for blasting, or loaded, and to any other working places as required in the approved ventilation plan. A lower mean entry air velocity may be approved in the ventilation plan if the lower velocity will maintain methane and respirable dust concentrations in accordance with the applicable levels. Mean entry air velocity shall be determined at or near the inby end of the line curtain, ventilation tubing, or other face ventilation control devices.

[ 61 FR 9828, Mar. 11, 1996; 61 FR 29288, June 10, 1996]

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United States Code

Title 30 published on 06-Jun-2018 04:01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 30 CFR Part 75 after this date.

  • 2018-03-26; vol. 83 # 58 - Monday, March 26, 2018
    1. 83 FR 12904 - Exposure of Underground Miners to Diesel Exhaust
      GPO FDSys XML | Text
      DEPARTMENT OF LABOR, Mine Safety and Health Administration
      Request for information; reopening of the rulemaking record for public comments.
      The comment period for the request for information, published on June 8, 2016 (81 FR 36826), which closed on January 9, 2018 (82 FR 2284), is reopened. Comments must be received on or before midnight Eastern Standard Time on March 26, 2019.
      30 CFR Parts 57, 70, 72, and 75
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