Underground mining was described in this account, although it cannot be determined when it had started.

Schematic of a Underground mining ( hard rock ) | cut and fill mining operation in hard rock.

Underground longwall mining.

Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, mainly those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also involves using the same techniques for excavating ores of gems such as diamonds.

Category: Underground mining

Underground coal mining commenced around 1899 by the Seattle and San Francisco Railway and Navigation Company, although coal had been mined in nearby Danville and Landsburg a few years earlier.

* NORCAT's Underground Mine Centre ( Fecunis Adit ), used for underground training and mining technology development in Onaping, ON, Canada

Category: Underground mining

Underground mining continued sporadically until 1922, when the last of the pumps was shut off causing the mines to flood.

Underground coal mining brings with it the problem of subsidence.

Underground mining ceased in Snailbeach in 1955.

Underground mining began with the Day Dawn mine in 1931 ; a number of similar operations were opened before and after the Second World War.

Underground mining methods are used for the Korobkovskoye deposit.

Now it is mainly a tourist destination and home to the Kimberley Alpine Resort, a ski area and the Kimberley Underground Mining Railway that features a underground mining interpretive centre.

Category: Underground mining

Underground mining in the area was begun in 1890, and Daniel C. Jackling and Robert C. Gemmell, both engineers, examined Wall's properties and recommended open-pit mining.

Category: Underground mining

Underground mining developed in the 19th Century, but the stone trade declined in the 20th Century stopping in the 1960s.

Category: Underground mining

* Underground mining ( hard rock )

* Underground mining ( hard rock )

The Underground Complex's SAGE computer equipment comprised a pair of computers, nicknamed ' Bonnie ' and ' Clyde ', plus Maintenance & Programming and Input & Output areas.

" In the annexes to the letter from the Joint Chiefs of Staff, it stated that in accordance with the agreed policy of the Combined Chiefs of Staff that supplies and equipment for the Polish Underground Forces is a British responsibility, and that the Polish request should be referred to the British Chiefs of Staff for such action as they may deem necessary and desirable.

# A recommendation was made that TfL reviewed the provision of stretchers and first aid equipment at Underground stations.

Automatic Train Protection ( ATP ) equipment, manufactured by Alcatel is fitted as well as a tripcock system for operation on tracks shared with London Underground.

Both are valued for their abrasion resistance, and hence find use in applications such as the wear plates of crushing equipment in mining operations.

The inadvertent destruction of many of these eggs by a human mining colony led the mother Horta to respond by killing the colonists and sabotaging their equipment ; it was only through a Vulcan mind meld that the race's benevolence and intelligence were discovered and peaceful relations established.

The busiest ports are Port-Gentil, the center for exports of petroleum products and imports of mining equipment, and Owendo, a new port that opened in 1974 on the Ogooué estuary, 10 km north of Libreville.

The foreign mining companies employed a small work force, provided little or no government revenue, and relied mostly on imported mining equipment.

In addition, Astra has interests in financial services ; heavy equipment, mining and energy ; agribusiness ; information technology ; infrastructure and logistics.

In recent times, the employment of joysticks has become commonplace in many industrial and manufacturing applications, such as ; cranes, assembly lines, forestry equipment, mining trucks, and excavators.

In addition to these two sectors, various other industries such as equipment manufacture, environmental testing and metallurgy analysis also rely on and support the mining industry throughout the world.

Frictional heat and sparks generated by mining equipment can ignite both methane gas and coal dust explosions.

The presence of heavy equipment in confined spaces also poses a risk to miners, and despite modern improvements to safety practices, mining remains dangerous throughout the world.

Europe has become a leading market for Namibian fish and meat, while mining concerns in Namibia have purchased heavy equipment and machinery from Germany, the United Kingdom, the United States, and Canada.

* Fénix capsules, rescue equipment used in the 2010 Copiapó mining accident

: machine building ( aircraft, trucks, and automobiles ; tanks and weapons ; electrical equipment ; agricultural machinery ); metallurgy ( steel, aluminum, copper, lead, zinc, chromium, antimony, bismuth, cadmium ); mining ( coal, bauxite, nonferrous ore, iron ore, limestone ); consumer goods ( textiles, footwear, foodstuffs, appliances ); electronics, petroleum products, chemicals, and pharmaceuticals

In the area of electrical power engineering, data mining methods have been widely used for condition monitoring of high voltage electrical equipment.

Types of simulated equipment include cranes, mining reclaimers and construction equipment, among many others.

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 sidewalls to protect workers and equipment from damage ), support excavation, drill rock face, load explosives, and blast explosives.

Whilst magnetometers can be used to help map basin shape at a regional scale, they are more commonly used to map hazards to coal mining, such basaltic intrusions ( dykes, sills and volcanic plugs ) that destroy resources and are dangerous to longwall mining equipment.

Machine building includes shipbuilding machinery, lifting and transport vehicles, mining equipment, agricultural machinery, metal assemblies and goods, electrical appliances and electrical machines and tools.

This effectively led to several mining towns being abandoned and the demise of the mining industry in eastern Oregon and elsewhere ; idle equipment was removed as scrap drives during World War II literally dismantled a great deal of the county ’ s mining infrastructure.

Ground Force Manufacturing, a large construction equipment manufacturer, completed an addition that increased their production space by in 2009 in order to meet the heavy demands for their mining construction products around the globe.

Other advanced equipment was also installed at Brookside, placing it at the forefront of mining technology in the Birmingham District at the turn of the century.