Tilton, John E.Aydin, Hamit2023-07-242023-07-241998https://hdl.handle.net/11124/177437Includes bibliographical references (pages 123-127).doctoral dissertationsengCopyright of the original work is retained by the author.Copper mines and mining -- Labor productivity -- United StatesLabor productivity -- United StatesLabor productivity growth in the U.S. copper industryText