"As a result of the above, during the third quarter the Company mined approximately 11,000 cubic yards of new gravels beginning in mid-September to the end of the quarter. The Company screened approximately 12,000 cubic yards, from the stockpile and newly mined gravels, in approximately 150 operating hours, producing approximately 50 ounces of gold."
SO how many grams per yard is 12,000 cubic yards= 50 ounces?