Your calculations seem reasonable but your estimate doesn't correlate well with FLPC's projected revenue based on their March 12 PR. FLPC have a 40.5% net interest in this mine. What am I missing between your estimate and the revenue projection stated below?
"FLPC current projections indicate that in the first 12 months of full production, Fencemaker operations will contribute approximately $7.2 million of top line revenues to the Company". http://www.firstlibertypower.com/investors/corporate-news/