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Sand and gravel excavation.

Sand and gravel excavation.

Sand and gravel excavation.

Sand and gravel excavation.

Sand and gravel excavation.

Mining and milling methods and costs at the glass-sand plant of P.J. Weisel, Inc., Corona, Calif.

Published Year

• 1930-1939 (6) *

Subject

• Gravel (6) *
• Sand (5)
• Excavating machinery (4)
• Mine haulage (2)
• Mineral industries--California (1)
• Mines and mineral resources--California (1)
• Mining engineering (1)
• Sand, Glass (1)
• Sand, Glass--California (1)

Author

• Thoenen, J. R. (5)
• Shaw, Edmund. (1)

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