Sand and gravel excavation.
Part 1,
The power shovel, the dragline excavator, and the excavator crane /
by J.R. Thoenen.

Description

Main Author

Thoenen, J. R. (John Roy), 1886-

Language(s)

English

Published

[Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines, 1934.

Subjects

Gravel.
Sand.
Excavating machinery.

Physical Description

43 p. : ill. ; 27 cm.

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