Code of Federal Regulations · Section
§ 75.400-1 — -1 Definitions
30 C.F.R. § 75.400-1
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(a) The term coal dust means particles of coal that can pass a No. 20 sieve.
(b) The term float coal dust means the coal dust consisting of particles of coal that can pass a No. 200 sieve.
(c) The term loose coal means coal fragments larger in size than coal dust.
Authorizing Statute
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Mandatory safety and health standards30 U.S.C. § 811