Technology and the mineral industries . Mineral technology and output per man studies : grade of ore . Mineral technology and output per man studies : rock drilling . Mechanization trends in metal and nonmetal mining as indicated by sales of underground loading equipment

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Bibliographic Information

Title
"Technology and the mineral industries . Mineral technology and output per man studies : grade of ore . Mineral technology and output per man studies : rock drilling . Mechanization trends in metal and nonmetal mining as indicated by sales of underground loading equipment"
Statement of Responsibility
. . .
Publisher
  • Work Projects Administration, National Research Project
Publication Year
  • 1940
Book size
26 cm

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