A major location on the Underground Railroad in the middle 19th century, the city today is a major coal port on Lake Erie at the mouth of the Ashtabula River northeast of Cleveland.

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.

* Underground coal gasification

Underground resources include copper, mercury, iron ore, chromium, manganese, asbestos, bauxite, graphite, phosphate, kaolinite, clay, limestone, quartz, marble, magnesite, fire clay, coal and nickel.

* Underground coal gasification, a gasification process carried on in non-mined coal seams using injection and production wells drilled from the surface

Underground coal fires of several hundred to over a thousand degrees Celsius may raise the surface temperature by only a few degrees.

Underground coal mines can be equipped with permanently installed sensor systems.

Underground coal seam fires are customarily quenched by inertization through mine rescue personnel.

* Underground coal gasification

Lots Road Power Station is a disused coal and later oil-fired power station on the River Thames at Lots Road in Chelsea, London in the south-west of The Royal Borough of Kensington and Chelsea, which supplied electricity to the London Underground system.

Underground coal seams are dewatered through pumping, which reduces pressure and releases trapped gases up to the well head.

Underground coal gasification is an industrial gasification process, which is carried out in non-mined coal seams using injection of a gaseous oxidizing agent, usually oxygen or air, and bringing the resulting product gas to surface through production wells drilled from the surface.

Underground coal mines are thoroughly inspected at least four times annually by MSHA inspectors.

* Underground coal gasification

Underground mining ( soft rock ) refers to a group of underground mining techniques used to extract coal, oil shale and other minerals or geological materials from sedimentary (" soft ") rocks.

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

* 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 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 )

J. Neil Schulman's novel, Alongside Night, features a group called the " Agorist Underground " ( from a Greek word for " marketplace ") who form a literal underground economy ( in a cavern beneath Manhattan ) to practice anarcho-capitalism until their revolution brings down the United States.

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.

Christian alternative music has its roots in the early 1980s, as the earliest efforts at Christian punk and new wave were recorded by artists like Andy McCarroll and Moral Support, Undercover, The 77s, Adam Again, Quickflight, Daniel Amos, Youth Choir ( later renamed The Choir ), Lifesavers Underground, Michael Knott, The Altar Boys, Breakfast with Amy, Steve Taylor, 4-4-1, David Edwards and Vector.

While with the Buzz, Bowie also joined the Riot Squad ; their recordings, which included a Bowie number and Velvet Underground material, went unreleased.

) Elsewhere, the album explored more serious themes, and found Bowie paying unusually direct homage to his influences with " Song for Bob Dylan ", " Andy Warhol ", and " Queen Bitch ", a Velvet Underground pastiche.

In 2002, Lineker took on his first acting role, barring roles playing himself in films such as Bend It Like Beckham or in the adapted-for-television stage play An Evening with Gary Lineker, as the voice of Underground Ernie on the BBC's children's channel, CBeebies.

Oyster cards ( the ticket-free system for London Underground ) are now given with wallets sponsored by IKEA who also sponsor the tube map.

Also, the Underground runs limited service on Christmas Eve ( with some lines closing early ) and does not operate on Christmas Day, except for the shuttle to Heathrow Airport.

Overcrowding on the Underground has been of concern for years and is very much the norm for most commuters during the morning and evening rush hours, with 95. 2 % of passengers being regularly affected by it.

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 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.

In the second edition of Mage: The Ascension, Marauders were much more cogent and likely to operate in groups, with the Umbral Underground using the Umbra to infiltrate any location and wreak havoc with the aid of bygones.

Along with adherents known as the New Communist Movement, some extremist illegal factions also emerged, such as the Weather Underground Organization.

There are some scheduled passenger services on their own privately managed, non-Network Rail lines, for example Heathrow Express which also partly runs on Network Rail and the London Underground also overlaps with Network Rail in places.

In Boston, The Modern Lovers, led by Velvet Underground devotee Jonathan Richman, gained attention with a minimalistic style.

The new magazine tied together earlier artists such as Velvet Underground lead singer Lou Reed, the Stooges, and the New York Dolls with the editors ' favorite band, The Dictators, and the array of new acts centered around CBGB and Max's.

In the US in the early 1980s these bands were joined by the Paisley Underground movement, based in Los Angeles, with acts like Dream Syndicate, The Bangles and Rain Parade.

Mod era: Rickenbacker basses were seen as the stable bass of many 1970s / 1980s mod revival bands such as the Jam, with the notorious growl and clank sound featuring on hit records such as the Jam's " Eton Rifles " and " Going Underground ".

In February 1987 she co-founded, with Elaine Eason Steele, the Rosa and Raymond Parks Institute for Self Development, an institute that runs the " Pathways to Freedom " bus tours which introduce young people to important civil rights and Underground Railroad sites throughout the country.

In the early 1860s, Northup, along with another black man, aided a Methodist minister in Vermont in helping fugitive slaves on the Underground Railroad.

John L. Smith, a Methodist minister in Vermont, with whom Northup had worked aiding fugitive slaves on the Underground Railroad.