RE:RE:RE:Orvana tailings reprocessing at EMIPA BoliviaKiln,
No. I expect the cost of the tailings recovery project at Don Mario to be similar to Parral's cost of around $18.69 USD per ton or tailings stacked on the heap leach. Using Parral's target recoveries of 65 percent for gold, 58 percent for silver, and 45 percent for copper, the tailings recovery plant at Don Mario should produce around 6500 ounces of gold per quarter, 125,000 ounces per quarter of silver, and 1000 tons of copper. At current metal prices, tailings revenue would be around $30 million USD per quarter or roughly 2X Parral current revenue.
Parral generated $5.8 million USD in cash flow in fiscal Q1 2021, and my estimate of Don Mario tailings recovery using the same process as Parral is $16.7 million USD per quarter.
Here is a comparison of the average metal values in the respective tailiings:
Project Parral Don Mario
Gold 0.273 g/t 0.75 g/t
Silver 43.8 g/t 15 g/t
Copper 478 ppm 5,000 ppm
Zinc 10,100 ppm 8,000 ppm