In the 5/17 PR, they said they processed 3005 tons of ore in 3 months, which is about 33 tpd. I think this is low, since I think the mill alterations and construction probably lowered the throughput. So let's say 40 tpd.
For 5/2, we get (.4226g/t Au x $1500/31g) + (20.72g/t Ag x $33/31g) = $20.44 + $22.06 = $42.50/t. For 40 tons, that's $1680. Since milling costs are ~$50/t, $42.50/t is not quite breakeven.
For the other days, we get $47.34, $137.53, and $109.27 per ton, or $1893.60, $5500, and $4370.80 per day. Once again, one breakeven day, but two days of nice profit. Totals for a year based on each of the 4 days would be $605k, 681k, 1.98M, and 1.57M, for an average of $1.2M.
If they can improve the grade and process so they average or exceed the two best days (~$5k/d), that's $1.8M/yr. Mill costs should be ~$700k/yr (40t x $50/t x 360d). I would guess those numbers will actually improve quite a bit with the in house lab and better weather so they can transport better ore. But even using the averages of the numbers given, the mill itself is running at a profit. Not as much as it would with the numbers previously expected of the ore, and not enough to fund all the exploration, but profitable. That means enough left over to fund some of the drilling, but they'll still need to use some of the LOC unless the numbers improve quite a bit. But if they can get the numbers up to say 6-10 g/t or increase production to closer to 100 tpd, they may need half or less of the LOC.