Loading ...That news seems very crazy and hard to believe. Many years ago I read that 1 ounce or 31 grams per ton was a big deal.
Parts: “The World Gold Council defines a high-quality underground mine as having a gold ore density between 8 and 10 g/t, while a low-quality underground mine has a gold ore density of 1 to 4 g/t.
“For underground mining, the World Gold Council defines between 8 and 10 grams per tonne as ‘high-quality’, and 1 to 4 grams per tonne as ‘low-quality’. There is no exact definition of what is considered as high or low grade. The list below is therefore a rough guide to what may be expected. ”
https://www.bullionbypost.co.uk/index/gold/gold-grade/
“The US Fire Creek underground mine in Battle Mountain, Nevada, has consistently produced high grade ore. In 2015, ore from the mine had an impressive density of 44.1 grams per tonne, putting it very high on the scale, and potentially the highest grade of gold currently being mined.