Mining other than coal
By: [by Clyde P. Smith]
Contributors: United States. Bureau of Labor Standards
Series: Bulletin / U.S. Bureau of Labor Standards -- no. 144; Occupational hazards to young workers -- report no. 9
Publisher: U.S. G.P.O.]
Published: 1951
Place of publication: [Washington
Language: eng
Number of pages: 65
Subjects: Mineral industries -- United States; Child labor -- United States; Mine safety -- United States; Occupational diseases -- United States