Category: Mining Intelligence
Reports on the pyrites, copper, sulphur, and manganese mines of Huelva and the wider world.
Copper Smelting
An Interview with Don Jorge Rieken
Lagunazo Copper and Sulphur Company Prospectus
Project of Law – Sale of the Rio Tinto Mines
American Copper Mines
American Lead and Copper Mines
Employment of Children in Mines: Commissioner’s Report
The Copper Mines of the Royal Santiago Mining Company
