RE:Q4 earnings estimateNot close, your numbers make no sense.
Q3 Trevali mined 74.1 Mlbs of zinc and sold only 65.3 Mlbs (delta of ~9 Mlbs) This will be sold in Q4. Similar with lead produced 6 Mlbs and sold 3Mlbs). Likely sale of around 80 Mlbs zinc for Q4.
Q3 average zinc lme price was 1.06 $/lb, Q4 average zinc lme price was 1.19 $/lb (likely average sale price of 1.16 $/lb after hedges taken into account.
Your've record barely any repricing gains despite much higher zinc prices during Q4. Q3 repricing gains were almost 10 M$.
Not sure how you made these calculations, but they make no sense.