The reef had been traced to a width of ten feet in 1897 .
The reef had been produced 12,560 ounces ( 356,000 g ) of gold that year from 8,393 long tons ( 8,528 t ) of quartz .
The reef had been traced to a width of ten feet in 1897 and produced 12,560 ounces ( 356,000 g ) of gold that year from 8,393 long tons ( 8,528 t ) of quartz .