According to this site, for an underground mine, 31.1 gpt is considered 'bonanza' - https://www.bullionbypost.co.uk/index/gold/gold-grade/

High grade is anything over 8 gpt...

So granted it was just ONE assay, but in mining terms, I believe 67 gpt is a "double bonanza" (sarcasm) 

Would love for RRC results to be the dark horse catalyst for our LBSR...