A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Some problems relating to economics of working methods used in flat seams
Method of selecting most economic system of mining; determination of costs of extraction, costs of drifting, transportation, and maintenance of drifts.
Some problems relating to economics of working methods used in flat seams
Method of selecting most economic system of mining; determination of costs of extraction, costs of drifting, transportation, and maintenance of drifts.
Some problems relating to economics of working methods used in flat seams
Hungarian Research Inst Min -- Publ
Pruzsina, J. (author)
1962
4 pages
Report
English
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