$1030 profit per tontheir last shipment was graded at 1.4 ounces Gold per ton so that is wildly profitable at $370/tonne mining cost including shipping.
If you want to use $1000 dollar gold... 1.4 ounces comes in at $1400 bucks per ton according to last shipment minus $370 shipping & mining costs.
$1030 profit per ton... pretty darn Good