Copper mining in Michigan

URI: https://gptkb.org/entity/Copper_mining_in_Michigan

GPTKB entity

Statements (69)

Predicate	Object
gptkbp:instanceOf	mining industry
gptkbp:archaeologicalSignificance	ancient mining tools prehistoric mining pits
gptkbp:beganIn	prehistory
gptkbp:country	gptkb:United_States
gptkbp:declinedAfter	mid-20th century
gptkbp:hasHistoricSite	gptkb:Portage_Lake_Lift_Bridge gptkb:Copper_Harbor gptkb:Delaware_Mine gptkb:Eagle_Harbor_Lighthouse gptkb:Keweenaw_National_Historical_Park gptkb:Lake_Superior gptkb:Keweenaw_Waterway gptkb:Adventure_Mine gptkb:Central_Mine gptkb:Champion_Mine gptkb:Cliff_Mine gptkb:Laurium_Manor_Inn gptkb:Quincy_Smelter gptkb:Redridge_Steel_Dam gptkb:Tamarack_Mine gptkb:Isle_Royale gptkb:Baltic_Mine gptkb:Ahmeek_Mine gptkb:Fort_Wilkins gptkb:Calumet_Historic_District gptkb:Quincy_Mine_Hoist Houghton County Courthouse Atlantic Mine Calumet and Hecla Industrial District Hubbell Smelter Lake Linden Smelter White Pine Mine Winona Mine
https://www.w3.org/2000/01/rdf-schema#label	Copper mining in Michigan
gptkbp:location	gptkb:Michigan
gptkbp:mineralExtracted	native copper copper oxides copper sulfides
gptkbp:notableCompany	gptkb:Calumet_and_Hecla_Mining_Company gptkb:Copper_Range_Company gptkb:Adventure_Mining_Company gptkb:Atlantic_Mining_Company gptkb:Baltic_Mining_Company gptkb:Tamarack_Mining_Company gptkb:Quincy_Mining_Company Ahmeek Mining Company Champion Mining Company Winona Mining Company
gptkbp:notableFor	gptkb:Adventure_Mine gptkb:Central_Mine gptkb:Champion_Mine gptkb:Cliff_Mine gptkb:Quincy_Mine gptkb:Tamarack_Mine gptkb:Baltic_Mine gptkb:Ahmeek_Mine 19th century early 20th century Atlantic Mine Calumet and Hecla Mine White Pine Mine Winona Mine
gptkbp:peak_production	late 19th century
gptkbp:region	gptkb:Copper_Country gptkb:Keweenaw_Peninsula
gptkbp:significant_closure	1968
gptkbp:bfsParent	gptkb:Copper_Country_Strike_of_1913
gptkbp:bfsLayer	7