30 CFR § 75.1107-11
Extinguishing agents; requirements on mining equipment employed in low coal.
On mining equipment no more than 32 inches high, the quantity of extinguishing agent required under the provisions of §§75.1107-7, 75.1107-9, and 75.1107-10 may be reduced by one-fourth if space limitations on the equipment require such reduction.
[37 FR 15303, July 29, 1972]
