Calumet & Hecla Mining Company

GPTKB entity

Predicate	Object
gptkbp:instanceOf	gptkb:mining_industry
gptkbp:ceased_operations	1968
gptkbp:country	gptkb:United_States
gptkbp:employs	thousands of workers
gptkbp:founded	1866
gptkbp:founder	gptkb:Alexander_Agassiz gptkb:Edwin_J._Hulbert
gptkbp:headquarters_location	gptkb:Calumet,_Michigan
gptkbp:historicalSignificance	once the largest copper mining company in the United States
gptkbp:industry	copper mining
gptkbp:listedOn	National Register of Historic Places (as part of Calumet Historic District)
gptkbp:mergedInto	gptkb:Quincy_Mining_Company
gptkbp:notable_executive	gptkb:Alexander_Agassiz
gptkbp:notableFor	gptkb:Calumet_Mine gptkb:Hecla_Mine
gptkbp:notableProduct	copper
gptkbp:operates	Calumet & Hecla Mining District
gptkbp:parent_company_(after_1968)	gptkb:Universal_Oil_Products
gptkbp:significantEvent	gptkb:Copper_Country_Strike_of_1913–1914 gptkb:Italian_Hall_Disaster
gptkbp:bfsParent	gptkb:Tamarack_Mine gptkb:Calumet_&_Hecla_Industrial_District_(historic_site)
gptkbp:bfsLayer	7
https://www.w3.org/2000/01/rdf-schema#label	Calumet & Hecla Mining Company