https://www.bunkerhillmining.com/
Bunker Hill Mining Corp.
Production at the historical Bunker Hill Mine began in 1885 and ran for over 95 years. It was a lead metal mine with silver and zinc produced as a by-product....
bunker hill miningcorp
https://scholars.depaul.edu/en/publications/bunker-hill-mining-and-manufacturing-compound/
Bunker Hill Mining and Manufacturing Compound - DePaul University Research Portal
bunker hill miningdepaul universityresearch portalmanufacturingcompound