Abstract Papers, 1926-1930, of Thomas Monteith Broderick, a long-time employee of Calumet and Hecla Mining Company in Calumet, Michigan as well as a visiting professor at the Michigan College of Mining and Technology in Houghton, Michigan. Papers include "Research laboratory report on the beneficiation of iron ore deposits at Michigan College of Mining and Technology," "Iron carbonyl" by Louis Koepel and Nick Kaiser, Jr., "Iron ore investigations, 1926-1928," and "Application of geology to problem of...