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 equipment

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 )

Aztlan Underground appeared on television on Culture Clash on Fox in 1993, was part of Breaking Out, a concert on pay per view in 1998, and was featured in the independent films Algun Dia and Frontierlandia.

He was also known as The Originator because of his key role in the transition from the blues to rock, influencing a host of acts, including Buddy Holly, Jimi Hendrix, The Rolling Stones, The Velvet Underground, The Who, The Yardbirds, Eric Clapton, Elvis Presley, The Beatles, and George Michael, among others.

Tramlink serves seven National Rail stations and has one interchange with the London Underground, at Wimbledon station for the District Line, and one with London Overground, at West Croydon for the East London Line ; one of the factors leading to its creation was that the area around Croydon has no Underground service.

This part of New York was in the so-called " Burnt Over District ," which earlier in the 19th century had generated much religious excitement, including the beginnings of Mormonism, and social causes, such as abolitionism and support for the Underground Railroad.

The phrase was spray-painted by an admirer on a wall in an Islington Underground station in the autumn of 1967.

Greenwich Village was also home to one of the many safe houses used by the radical anti-war movement known as the Weather Underground.

While the first use of a roundel in a London transport context was the 19th-century symbol of the London General Omnibus Company – a wheel with a bar across the centre bearing the word GENERAL – its use on the Underground stems from the decision in 1908 to find a more obvious way of highlighting station names on platforms.

The Underground railway system had been developed and was owned by the Underground Electric Railways Company of London ( UERL ) and the Metropolitan Railway.

The London Regional Transport Act contained provision for setting up subsidiary companies to run the Underground and bus services and in 1985 London Underground Limited ( LUL ), a wholly owned subsidiary of London Regional Transport, was set up to manage the tube network.

In January 1985 the Capitalcard season ticket was launched, offering validity on British Rail as well as London Underground and London Buses.

The London Underground did not pass to TfL until after a Private Finance Initiative ( PFI ) agreement for maintenance was completed in 2003.

The Post Office Railway, also known as Mail Rail, was a narrow-gauge driverless underground railway in London, built by the Post Office with assistance from the Underground Electric Railways Company of London, to move mail between sorting offices.

In the ' 90s, Marl's status as a high-profile producer was restored thanks to his work with artists like Rakim, Lords Of The Underground, Queensbridge's own Capone-N-Noreaga, Da Youngtas and Fat Joe.

Mars Direct was featured on a Discovery Channel programs Mars: The Next Frontier in which issues were discussed surrounding NASA funding of the project, and on Mars Underground, where the plan is discussed more in-depth.

In 1943 " Związek Mazurski " was reactivated secretly by Masurian activists of the Polish Underground State in Warsaw and led by Karol Małłek.

Where the river was narrow, it was the way to freedom for thousands of slaves escaping to the North, many helped by free blacks and whites of the Underground Railroad resistance movement.

Before and during the Civil War, the Ohio River was called the " River Jordan " by slaves crossing it to escape to freedom in the North via the Underground Railroad.

OS / 2 was used in the London Underground Jubilee Line Extension Signals Control System ( JLESCS ) in London, UK.

The album was produced by John Cale, a former member of New York's experimental rock group The Velvet Underground.

In 2006 it was realised that an old collection of the Eastern Underground Orchid ( Rhizanthella slateri ) from Lamington was actually a separate species and has been described as the Lamington Underground Orchid ( Rhizanthella omissa ).

In 2000, Coe toured as the opening act for Kid Rock, and The New York Times published an article by journalist Neil Strauss, who described the material on Nothing Sacred and Underground Album as " among the most racist, misogynist, homophobic and obscene songs recorded by a popular songwriter.

The original members of the Dwarves began making music together in the mid-1980s as teenagers in the Chicago garage rock outfit, Suburban Nightmare, which was compared to The Sonics, and which has been described as part of the Paisley Underground scene.

The band toured the United Kingdom in late 1988 and in 1989, they signed to Rough Trade, and released their second album, On Fire, which has been described as " lo-fi psychedelia reminiscent of Jonathan Richman being backed by The Velvet Underground ", and is considered the band's defining moment.

Priestley's wartime BBC radio " chats " described the beauty of the English natural environment, this at a time when rationing was at its height, and the population of London was sheltering from the Blitz in its Underground stations.

The Underground Complex was often described as looking like a cross between a mad scientist's lair and a setting in a science fiction novel.

' It was followed by the collections West Midland Underground, The Phallic Forest which Jean Bedford described in National Times as ' elegantly written and evocative ... an undercurrent of sensitivity and searching for truths ,' and of which the title story was filmed by Kit Guyatt, Reading the Signs and This is for You.

With their relocation to New York, their sound also shifted, with the band's next releases described as " an unholy collision between Beatle harmonies and Velvet Underground dissonance ", with Parker stating at the time that the band were getting into " the harmonic value of distortion ; we started to be very particular about where we set the instruments up and the angles the sounds were bouncing at.

A review at the time of its release in Underground described the album as " a coherent, tuneful package with tracks that are, on the whole, pretty listenable ".

As GL / AL had a much poorer support network compared to the AK, supported by the Polish Underground State, and Soviet air drops were not supplying it with foodstuffs, it often had to resort to forced acquisitions, described by modern historians as " banditry ".

In late 1975, the Weather Underground put out an issue of a magazine, Osawatamie, which carried an article by Dohrn, " Our Class Struggle ", described as a speech given to the organization's cadres on September 2 of that year.

He described its style as " strangely semi-traditional, undecided modernism " and summarised the result: " The design certainly does not possess the vigour and directness of Charles Holden's smaller Underground stations.

Hazlewood's collaborations with Nancy Sinatra as well as his solo output in the late 1960s and early 1970s have been praised as an essential contribution to a sound often described as " Cowboy Psychedelia " or " Saccharine Underground ".

TC Wall, reviewing the album in Underground magazine, described Lindy's Party as " completely confident, commercial, professional, and dangerously catchy " and " a fine album that'll be caressed for generations ".

In episode 4 (" Underground ") another Earth ship is described as crashing three years prior with no survivors.

In September 2005, the imported debut was ' Album Of The Week ' in influential London record store Rough Trade who described it as "... a fantastic album of ‘ European cool ’ with breathy vocals over music which sounds like The Concretes, Stereolab or a modern take on the Velvet Underground …" In 2006 the band released the album on their own Rushmore Recordings label headed up by ex Warner Bros A & R executive and Deaf School founder member Steve Allen.

Some eyewitnesses reported a " strange smell ", described by some as resembling burning rubber, emanating from the Underground stations.

Underground living has been a feature of fiction, such as the hobbit holes of the Shire as described in the stories of J. R. R. Tolkien and The Underground City by Jules Verne.