Amendment to 30 CFR parts—55 Health and safety standards: Metal and non-metallic open pit mines; 56—Health and Safety Standards: Sand, gravel and crushed stone operations; and 57—Health and Safety Standards: Metal and non-metallic underground mines : Bureau of Mines, Department of the Interior, Washington, DC, Code of Federal Regulations, Title 30 Chapter 1Federal Register, Aug 1974, 39.153, 28433–28434 abstr in CIS Abstracts (CIS 76–675)

• Book ID: 107722746
• Publisher: Elsevier Science
• Year: 1977
• Tongue: English
• Weight: 129 KB
• Volume: 8
• Category: Article
• ISSN: 0003-6870
• DOI: 10.1016/0003-6870(77)90148-x