Dry-pressed Building Bricks from Copper Mill Tailings P. G. Pigott Published: 1971 Total Pages: 22 Get eBook
Dry-pressed Building Bricks from Copper Mill Tailings P. G. Pigott Published: 1971 Total Pages: 586 Get eBook
Three Mine Fire Control Projects in Northeastern Pennsylvania H. A. Dierks Published: 1971 Total Pages: 768 Get eBook
Bureau of Mines Research Programs on Recycling and Disposal of Mineral-, Metal-, and Energy-based Solid Wastes Charles B. Kenahan Published: 1971 Total Pages: 68 Get eBook