DUBUQUE ORE CONCENTRATING COMPANY
DUBUQUE ORE CONCENTRATING COMPANY. The Dubuque Ore Concentrating Company was organized in 1892 with the following officers: JOHN BABCOCK, president; E. E. JONES, vice president; Samuel J. SOUTHWELL, secretary; and PHILIP PIER, , treasurer. By this date considerable DRYBONE was being mined in this county, but as yet there was no reduction plant here. The above company laid plans to mine drybone, BLACK JACK and GALENA on an extensive scale. Its plant was on Southern Avenue.
Oldt, Franklin T. History of Dubuque County. http://www.ebooksread.com/authors-eng/franklin-t-oldt/history-of-dubuque-county-iowa-being-a-general-survey-of-dubuque-county-histor-tdl/page-3-history-of-dubuque-county-iowa-being-a-general-survey-of-dubuque-county-histor-tdl.shtml