"any idea how many ounces of gold we have" We're looking at 5 kilometers of strike length... possibly twice that, but from the drilling it looks like the maiden resource estimate will focus on maybe 2600 meters.
Here's my math - you can use your own numbers length - 2600 meters
width - 150
depth - 400
cubic meters - 156,000,000
tons - 421,200,000
at 1 gram per ton
421,200,000 grams 13,587,097 ounces
at 2 gram per ton
842,400,000 grams 27,174,194 ounces
at 3 gram per ton
1,263,600,000 grams 40,761,290 ounces