Is there any info anywhere estimating a mine life @ 200 tpd ? That is very low production volume. How about 1000 tpd? ( I know, Mine life is going to be 5 times longer if production is only 200tpd !). The Nolan is a 12 sq. mile area. How many yrs. would it take to mine that area out using underground mining methods? A lot of variables here, but someone has the savvy to come up with an estimate. Oh ! Good morning everyone.