Size matters & Thor will be proven soon.https://mrdata.usgs.gov/mrds/map-graded.html
Compare the line from Bingham Canyon Mine (W of Salt Lake City) through Idaho and up to Trout Lake, BC to Thor Project & potential porphyry: The Bingham Canyon copper mine in Utah is the world's largest human-made excavation. https://www.google.com/search?q=largest+mine+in+the+world&oq=largest+mine+&aqs=chrome.0.0i512l2j69i57j0i20i263i512j0i512l6.4527j0j7&sourceid=chrome&ie=UTF-8
Bingham Canyon Mine is the biggest mine in the world. It is an open pit mine based in the state of Utah, USA and is known for its copper production. The mine itself is estimated to hold around 19 million tons of copper across the 1900 acres of land. Bingham Canyon Mine is 1200 metres deep and has 2500 employees in total. 25% of the copper in the US is produced by Bingham Canyon Mine.