Leeville Underground Project

 mine, gold mine

The Leeville underground project, which began gold production in fourth quarter 2006, was expected to produce a total of approximately four million ounces over seven-plus years of mine life. At a steady-state mining rate of approximately 3,500 tons per day, the mine should produce an annual average of 450,000 to 500,000 ounces. Capital for Leeville is approximately $180 million, which includes mine development, facilities, dewatering infrastructure, a production shaft and a ventilation shaft.

Leeville will be Newmont’s first underground mine in Nevada accessed via a shaft (as stated in 2002 Annual). The mine plan outlines ramps and drifts to mine three distinct deposits called West Leeville, Four Corners and Turf, all located approximately 1,400 to 2,100 feet below surface.

In 2002, Atkinson began work on the Leeville Shafts in Carlin, Nevada. Designed to recover underground gold deposits which were located near an open pit mining operation, the project included the excavation and concrete lining of two separate shafts: a 22-foot-diameter, 1,900-linear-foot production shaft, and a 20-foot-diameter, 1,650-linear-foot ventilation shaft. Both shafts were excavated using typical drill and blast techniques.


Reference:
www.infomine.com/companies-properties/reports/propertyr...

www.im-mining.com/2011/02/01/newmonts-nevada/