F. W. O'Neil served as the Champion Copper Company's Chief Engineer during the company's first four years. He was succeeded by R. R. Seeber, who left after a few years. His replacement was Harry T. Mercer, already the Chief Engineer for the Trimountain Mining Company, as part of the consolidation of the Copper Range Company's mines. Mercer would serve until his retirement in 1950.

There is some confusion over the exact timing of the above changes, as C. E. Cleaver was apparently appointed Chief Engineer for the Copper Range Company in 1907. Additionally, Bernard I. Manderfield was probably the acting Chief Engineer during the late 1930s.

The General Superintendent was responsible for the daily operations of the Copper Range Company's mines. It is not entirely clear when the position was established or its relationship with the position of General Underground Superintendent. Albert Mendelsohn and Bernard I. Manderfield are the two General Superintendents known to have served prior to the death of William H. Schacht in 1944.