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 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

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 )

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.

In Wilmington, Quaker Thomas Garrett would secure transportation to William Still's office or the homes of other Underground Railroad operators in the greater Philadelphia area.

** South Wimbledon tube station, a London Underground station in the area

** Wimbledon Park tube station, a London Underground station in the area

Underground dams are used to trap groundwater and store all or most of it below the surface for extended use in a localized area.

The thriving shopping area around Taipei Main Station includes the Taipei Underground Market and the original Shin Kong Mitsukoshi department store at Shin Kong Life Tower.

The area surrounding Bloomsbury is served by several London Underground stations, although only two of these ( Russell Square and Euston Square ) have entrances in Bloomsbury itself.

The area is served by Northwood, Northwood Hills and Moor Park London Underground stations, situated along the Metropolitan line.

Also at this time new industries near the area such as the Ford Motor Company plant at Dagenham caused a new wave of mostly working class developments along the route of the new Underground line.

There are several Underground Railroad sites in the Augusta area.

Before the American Civil War, the area around West Branch was an active focal point of the Underground Railroad, a network for the freeing of slaves from the southern states.

James Dye, ( born 1983 ), co-founder and writer for The Maverick Underground, serving Minnesota State University, Mankato, and the Greater Mankato, MN area.

They created a stop on the Underground Railroad for fugitive slaves in the antebellum years in nearby New London, then the site of the Friends Meeting serving the entire area.

Founded by Hicksite Quakers, who were early abolitionists, Pennville and the surrounding area is rich in the history of the Underground Railroad.

The area where Saddler settled became a predominantly black community known as Saddlertown, a stop on the Underground Railroad.

At the same time more African-American families came to the area via the Underground Railroad.

Many homes in the area were stops on the Underground Railroad.

The Willow Grove area was also a major player in the efforts of the Underground Railroad during the Civil War.

Several townsfolk and local historians claim that Montrose played a significant role in the Northern Trail of the Underground Railroad, housing several slave families in the area.

Prior to, and during, the Civil War, many abolitionists lived in the area, and several locations within the town of Lewisburg served as stopping points on the famous Underground Railroad.

* There were fugitives that Joah Carter hid during the Underground Railroad times from the Corry, Pennsylvania area.

Before and during the Civil War, several houses in the area were also used as part of the Underground Railroad.

In the years leading up the Civil War, a cave in the Morganton and Greenback area is believed to have been a stop on the Underground Railroad, perhaps reflecting the area's ties to abolitionist-heavy Blount County.

The area is not connected to the London Underground or National Rail networks, however Hainault tube station, Newbury Park tube station ( central line ) and Romford railway station are nearby.