Standard calibration and maintenance procedures for wet test meters and coal mine respirable dust samplers : (supersedes IR 1073).

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245	0	0	‡aStandard calibration and maintenance procedures for wet test meters and coal mine respirable dust samplers : ‡b(supersedes IR 1073).
260	⊔	⊔	‡a[Washington, D.C.?] : ‡bU.S. Dept. of Labor, Mine Safety and Health Administration, ‡c1980.
300	⊔	⊔	‡a14 p. : ‡bill. ; ‡c27 cm.
490	0	⊔	‡aInformational report ; ‡vIR 1121
538	⊔	⊔	‡aMode of access: Internet.
650	⊔	0	‡aMine dusts ‡xTesting.
650	⊔	0	‡aCoal mines and mining ‡zUnited States ‡xDust control.
710	1	⊔	‡aUnited States. ‡bMine Safety and Health Administration.
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COM	⊔	⊔	‡d20120406 ‡mThis record was modified while in the University of Michigan Aleph system for one of the following reasons: to resolve an incorrect bibliographically determined rights status, to include a new OCLC number, or to otherwise address or update incorrect or incomplete metadata.
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