Question: Which mine began operation first, Colomac Mine or Northland Pyrite Mine?
Sentence (from "Northland Pyrite Mine"): The Northland Pyrite Mine, also known as James Lake Mine, Rib Lake Mine, Harris Mine or simply Northland Mine, is an abandoned underground mine in Northeastern Ontario, Canada, located on the southwestern shore of James Lake in Best Township of Temagami.
Relevant evidence: Yes