Title Technology, employment, and output per man in copper mining / by Y. S. Leong, Emil Erdreich, J. C. Burritt ... [and others] Work projects administration, National research project, in cooperation with Department of the interior, Bureau of mines ...

Publication Info.

Item Status

Location	Call No.	Status	OPAC Message	Public Note	Gift Note
Moore Stacks	TN443.A3 L4	Available	---

Description	xvi, 260 pages : including frontispiece, illustrations (including map) tables, diagrams ; 25 cm.
Series	National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques. Mineral technology and output per man studies ; [Report no. E-12]
	Mineral technology and output per man studies ; rept. no. E-12.
Note	Photoprinted.
	Issued also in Technology, employment, and output per man: copper, iron, placer gold (National research project on reemployment opportunities and recent changes in industrial techniques) [1937-40]
Bibliography	Bibliographical foot-notes.
Subject	Copper mines and mining -- United States.
	Copper mines and mining.
	United States.
	Miners -- United States.
	Miners.
	Mining machinery.
	Mining machinery.
Added Author	Erdreich, Emil.
	Burritt, J. C.
	United States. Bureau of Mines.