Canada
Astronomy
Geology
Project-independent assessment
Edit summary: Mining: source and qualify "one of the world's largest suppliers of nickel" with USGS Professional Paper 1802-N (about 80% of world nickel in the first half of the 20th century, PGE by-product); remaining claim keeps its tag
64.22% of edit
https://legacy-assets.eenews.net/open_files/assets/2017/12/19/document_gw_13.pdf
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