If you look at the Qtrly they forecast $38M in expenditure.
So with cash of $35M - $38M gives you a defecit of $3M before Gold sales.
If they sell 15,000 oz @ $1650 then $25M is realised, so cash will be $22M.
If they sell 17,500 oz. @ $1650 then 29M is realised, so cash is $26M.
If they sell 20,000 oz, then 33M is realised so $30M cash is available.
I Have used $25M as a mid point.
DYOR