Ads
related to: underground hard rock mining jobsjobs2careers.com has been visited by 100K+ users in the past month
Search results
Results from the WOW.Com Content Network
There are two principal phases of underground mining: development mining and production mining. Development mining is composed of excavation almost entirely in (non-valuable) waste rock in order to gain access to the orebody. There are six steps in development mining: remove previously blasted material (muck out round), scaling (removing any unstable slabs of rock hanging from the roof and ...
Many of the roles are specific to a type of mining, such as coal mining. Roles considered to be "miners" in the narrower sense have included: Hewer (also known as "cake" or "pickman"), whose job was to hew the rock. Collier, a hewer who hews coal with a pick. Driller, who works a rock drill to bore holes for placing dynamite or other explosives.
OSHA regulates underground construction by companies and federal agencies but does not regulate underground construction activities associated with mining. [1] Underground construction is one of the most dangerous industries in the world but is becoming safer, especially as the most dangerous jobs are automated. [10]
Underground mining continued at a variety of locations around the pass until 1951. In the 1980s one of the area's hard-rock mines was briefly re-opened. At least one mining company is actively exploring for gold in the area now. [1] Through 2006 the district produced 667-thousand ounces of hard rock gold and 60-thousand ounces of placer gold. [2]
Underground hard-rock mining; Underground soft-rock mining; W. Whim (mining) Winze This page was last edited on 3 September 2017, at 18:24 (UTC). Text is available ...
The Hard Rock Miner's Handbook is a reference book that deals with the underground hard-rock mining industry. It was written by engineer Jack de la Vergne as a non-profit publication. [1] The first edition was published in 2000 by McIntosh Engineering, a mining engineering consulting company. [2]
It has a grid of 16-foot-high (4.9 m), 40-foot-wide (12 m) tunnels separated by 25-foot-square (7.6 m) limestone pillars created by the room and pillar method of hard rock mining. [1] The complex contains almost 10.5 miles (16.9 km) of illuminated, paved roads and several miles of railroad track.
Open-pit mining, also known as open-cast or open-cut mining and in larger contexts mega-mining, [1] is a surface mining technique that extracts rock or minerals from the earth. Open-pit mines are used when deposits of commercially useful ore or rocks are found near the surface where the overburden is relatively thin. In contrast, deeper mineral ...
Ads
related to: underground hard rock mining jobsjobs2careers.com has been visited by 100K+ users in the past month