bulk sampling वाक्य

In 1980 / 1981, Asarco also mined a 2, 000 + ton bulk sample by way of an adit developed at the Tulks Hill Lead-Zinc orebody near the southwestern corner of Red Indian Lake . ( This prospect, with between 600, 000 and 800, 000 tons of recoverable ore, as of November 2016, had not yet been mined ).
After significant additional bulk sampling exercises in 2009 and 2010 ( both from large-scale surface excavations and large-diameter drilling programmes on K2, Dyke Zones A and B, as well as the four blows intended to form part of the life-of-mine plan ), the resource statement was signed off by diamond specialists Mineral Services Canada in their capacity as independent competent persons.