American West Metals (ASX:AW1) said that preliminary economic analysis at its Storm copper project in Canada on a starter operation based on mining inventory of 10.3 million tonnes at a grade of 1.3% of copper and 3.7 grams-per-tonne of silver delivers 487,000 tonnes of copper concentrate at 17.1% grade of copper and 49 g/t grade of silver.
It estimates a total revenue of around $839 million, the filing said.
It will begin the mine permitting process based on the analysis. It is planning a drill program within the year to accelerate the definition of copper resources.
The initial mine plan covers 10 years of production with scope to increase both the scale of the mining operation and the mine life.
The firm's shares rose over 2% on market close on Monday.
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