Jackson, Chas.F
Metal-Mining Practice Bullutin 419 Chas.F. Jackson , J.H. Hedges - Washington United States Government Printing Office 1939 - x, 512 p. ill. incl. plans, tables, diagrs., plates 23cm
includes index, consolidates and analyzes information on mining methods
USA0.60
Mining engineering,--Technologies of explosives--United States
Metal-Mining Practice Bullutin 419 Chas.F. Jackson , J.H. Hedges - Washington United States Government Printing Office 1939 - x, 512 p. ill. incl. plans, tables, diagrs., plates 23cm
includes index, consolidates and analyzes information on mining methods
USA0.60
Mining engineering,--Technologies of explosives--United States