30 CFR 75.326
§ 75.326 Mean entry air velocity.
United States · 30 CFR — Mineral Resources · Status: effective
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- Citation
- 30 CFR 75.326, § 75.326 Mean entry air velocity, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/133497
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Full text
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.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.