Analysis of U. S. underground thin seam mining potential. Volume III: data base. Final technical report. [Reserves mostly less than 1000 ft underground in thin seams by state and county]

Autor:	D. Barell, R. J. Fine, W. J. Douglas, R. A. Pimental
Rok vydání:	1978
Předmět:	Underground mining (soft rock) Volume (thermodynamics) Mining engineering business.industry Coal mining Technical report business Geology
DOI:	10.2172/6207858
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0804287f198427c0dc3a4fd14d5f2cbd https://doi.org/10.2172/6207858 Zobrazit plný text záznamu