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PB206241

Publication Date	1971
Personal Author	Jacobson, M.; Parobeck, P. S.; Hughes, M. E.
Page Count	14
Abstract	The respirable dust standard in the Federal Coal Mine Health and Safety Act of 1969 is designed to prevent disability and death from coal workers' pneumoconiosis. Beginning June 30, 1970, the operators of coal mines were required to maintain the average concentration of respirable dust in the active workings at or below 3.0 milligrams of dust per cubic meter of air. The standard is reduced to 2.0 milligrams per cubic meter after December 30, 1972. This paper presents the equipment and procedures used by the coal mine operators in implementing the respirable dust sampling program established by the Secretary of the Interior and the Secretary of Health, Education, and Welfare and shows the effect of the law, during the first year, on the reduction of dust levels in selected mines. The system employed by the Bureau of Mines for analyzing and processing the dust samples is also presented.
Keywords	Dust control Coal mines Industrial medicine Standards Respiration Dust Dust collectors Concentration(Composition) Pneumoconiosis Coal Mine Health and Safety Act 1969 Respirable dust concentrations
Source Agency	Invalid Source Agency Code
NTIS Subject Category	57U - Public Health & Industrial Medicine
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Document Type	Technical Report
Title Note	Information circular 1968-1971.
NTIS Issue Number	197206

Effect of Coal Mine Health and Safety Act of 1969 on Respirable Dust Concentrations in Selected Underground Coal Mines.

Effect of Coal Mine Health and Safety Act of 1969 on Respirable Dust Concentrations in Selected Underground Coal Mines.
PB206241

Publication Date	1971
Personal Author	Jacobson, M.; Parobeck, P. S.; Hughes, M. E.
Page Count	14
Abstract	The respirable dust standard in the Federal Coal Mine Health and Safety Act of 1969 is designed to prevent disability and death from coal workers' pneumoconiosis. Beginning June 30, 1970, the operators of coal mines were required to maintain the average concentration of respirable dust in the active workings at or below 3.0 milligrams of dust per cubic meter of air. The standard is reduced to 2.0 milligrams per cubic meter after December 30, 1972. This paper presents the equipment and procedures used by the coal mine operators in implementing the respirable dust sampling program established by the Secretary of the Interior and the Secretary of Health, Education, and Welfare and shows the effect of the law, during the first year, on the reduction of dust levels in selected mines. The system employed by the Bureau of Mines for analyzing and processing the dust samples is also presented.
Keywords	Dust control Coal mines Industrial medicine Standards Respiration Dust Dust collectors Concentration(Composition) Pneumoconiosis Coal Mine Health and Safety Act 1969 Respirable dust concentrations
Source Agency	Invalid Source Agency Code
NTIS Subject Category	57U - Public Health & Industrial Medicine
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Document Type	Technical Report
Title Note	Information circular 1968-1971.
NTIS Issue Number	197206