Coal contractor mining facts.

Bibliographic Details
Corporate Author:	National Institute for Occupational Safety and Health
Format:	Government Document Serial
Language:	English
Published:	Pittsburgh, PA : National Institute for Occupational Safety and Health.
Series:	DHHS publication.
Subjects:	Coal mines and mining > United States > Statistics > Periodicals. Contractors' operations > United States > Statistics > Periodicals. Coal mine accidents > United States > Statistics > Periodicals. Mine safety > United States > Statistics > Periodicals.
Online Access:	http://purl.fdlp.gov/GPO/gpo3754 Scroll down to title "Coal Contractor Mining Facts"
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