The quarter generated positive cash flow from operations of $4.4 MM. Cash cost was $862 per ounce and $146 per ton.

This indicates an average head grade of ~0.17 oz/t. I'll leave the 8th grade math as an exercise for the reader.

Note how the $/oz improves as head grade improves, assuming a constant $146/t processing cost:

Head Grade $/oz

0.20 $730

0.22 $663

0.25 $584

0.30 $487

$650/oz cash cost by the end of the year looks to be within reach as the devlopment ore is used up and regular ore hits the mill consistently.