Ann: Large Conductive Body Defined Surrounding Nickel Sulphides, page-171

"NICKEL: This valuable metal doesn’t usually occur in nature as a bulk tonnage target since most bulk tonnage mines contain 100 million tonnes of ore or more, and most hard rock nickel deposits are less than 10 million tonnes in size. Therefore, anything over 20 metres in thickness (significantly less thickness than other commodities) and 2% nickel grade or better would be reasonably considered high-grade. Example: In September 2007, Noront Resources released two nickel intercepts from shallow drilling between 80 metres and 150 metres deep, with a section of 71 metres grading 1.8% nickel and 1.5% copper. The stock moved from $0.80 to $4.00"

https://www.mining.com/web/making-the-grade-understanding-exploration-results/