RE:At current metals prices, this company is not profitableAlfTanner,
IMHO, your overhead cost estimate is too high. The exploration spend happened in Q1 for the most part, and care and maintenance was a one time expense for the month that Galena was down. So I get total quarterly overhead of $4.2 million USD.
At the metal prices that you quoted, Americas Silver will generate revenue of $19.9 million USD in Q3 2018, and I see an after tax profit of $3 million USD or 7.2 cents per share.
You have to factor in the production ramp to 1650 tpd for Q3 in Mexico, and I figure that they mined a month's worth of ore and stored it underground at Galena, and that additional ore will be processed in the next 2 quarters. My estimate is 522 tpd at Galena for Q3 2018.