Live Breaking News & Updates on Pewabic Mining Company

Stay updated with breaking news from Pewabic mining company. Get real-time updates on events, politics, business, and more. Visit us for reliable news and exclusive interviews.

Milling improvements during the 1860s set the stage for WWI copper production | News, Sports, Jobs

Cornish-style gravity stamps and copper washroom launders remained the standard in the Lake Superior copper district for about a decade. While gravity stamps a ....

United States , Portage Lake , Phoenix Mine , Copper Falls , Lake Superior , Atlantic Mine , Charlesm Rolker , John Collom , William Evans , Ely Whitney Blake , William Ball , C Harry Benedict , Pewabic Mining Company , Hill Mine , Copper Falls Mine , Annual Report , Mineral Statistics , Cliff Mine , Mineral Commissioner , Michigan Geological Survey Division , Keweenaw Series , Whitney Blake , Collom Jig , Hecla Story , Evans Slime , Allouez Mine ,