Ann: Drilling Commenced at 64North Project in Alaska, page-30

Pogo mine

From Wikipedia, the free encyclopedia

The Pogo mine is a gold mine in the state of Alaska.^[2][2] By 31 December 2017 Pogo had produced 3.6 million ounces of gold at a grade of 13.6 g/t. The mine has estimated indicated and inferred mineral resources of 4.15 million ounces of gold at a grade of 14.7 g/t (JORC). It is located 30 miles (48 km) northeast of Delta Junction and 135 miles (217 km) east of Fairbanks.^[3][4]

Orebody and mining method[edit]

The orebody consists of numerous highly irregular quartz veins, ranging in thickness from 2 to 40 ft (0.61 to 12.19 m) with 8 to 20 ft (2.4 to 6.1 m) being typical, and ranging in dip from horizontal to vertical with 30-45 degrees being normal. A complex system of faulting offsets the veins both parallel and perpendicular to the strike, resulting in a "chopped-up" orebody. Until 2019 the mine utilized drift-and-fill and overhand cut-and-fill mining methods when, under new owner Northern Star Resources, the mining method was changed to longhole stoping.