The Pebble copper and gold project has a new preliminary economic assessment (PEA), providing fresh cost and price estimates and detailing an infrastructure plan that uses the “southern route” for the project access. The project, being developed by Vancouver-based Northern Dynasty, has been surrounded by controversy and has been stuck limbo since an Environmental Protection Agency (EPA) decision to block the mine.
The Pebble copper and gold project has a new preliminary economic assessment , providing fresh cost and price estimates and detailing an infrastructure plan that uses the “southern route” for the project access.
Northern Dynasty says the 2023 PEA updates the EPA final determination and the US Army Corps of Engineers record of decision appeal processes. The Pebble project would be capable of processing 1.3-billion tons of mineralised material over 20 years of mining at a strip ratio of 0.12:1, with an average yearly mine operating cost of $14.17/t.
Over its life-of-mine, Pebble will unearth 6.4-billion pounds of copper; 7.4-million ounces of gold; 300-million pounds of molybdenum; 37-million ounces of silver; and 200 000 kg rhenium.
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