Cost Keeping for Small Metal Mines

Technical Paper 223
DEPARTMENT OF THE INTERIOR
FRANKLIN K. LANE, SECRETARY
BUREAU OF MINES
VAN. H. MANNING, DIRECTOR
COST KEEPING FOR SMALL
METAL MINES
BY
J. C. PICKERING

WASHINGTON
GOVERNMENT PRINTING OFFICE
1919

Pickering, J. C. Cost Keeping for Small Metal Mines. [Washington D.C.]. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc66479/. Accessed August 2, 2014.