The gates which were used at the Copperhouses pool sluice were found below ground behind the Hayle Harbour Office.
The resulting environmental issues can be separated into below ground and above ground.
Some parts of the fence are 17 feet high, with metal plates extending ten feet below ground to prevent tunnelling.
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She added that the only safe way to eradicate the plant was to remove or sterilise all below ground material.
The graveyard dogs soon returned, digging under a vinyl fence built four-feet high with three feet of wire mesh below ground.
Significantly, most of the potash resource lies relatively close to the surface at depths between 800 to 2, 000 feet below ground.
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With buildings were still unstable, with fires raging below ground of 2, 000 degrees or more, there was good reason for their concern.
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But this would not necessarily exclude the possibility that life or the remnants of past life persist below ground, where conditions could be more benign.
Kobel says between 500 and 700 people are working on the project at any time, building below ground while the old station continues to function above.
But in the spirit of commercialism there are now plans to build a subterranean shopping complex and a huge public transit terminal from 30ft below ground level.
Located about 25 miles below ground, the quake triggered brief tsunami warnings for the rest of Central America, Peru, Colombia, and Panama, but no waves or surges resulted.
The waste heat is converted into cooling capacity, and the small heat surplus is dumped into aquifers 300 m below ground level, where it is stored and recovered in winter.
The water originates near a lava flow 6, 000 feet below ground, passes through a nearby geothermal power plant and cools to just over 100 degrees Fahrenheit by the time it reaches the lagoon.
Chambers recently invited me below ground at the Brompton Road Tube station in West London, which he intends to turn into a restaurant and museum in time for the 2012 Olympics.
But in the Southwest, where the frost line is only about 18 inches below ground, the added incremental cost of digging out a basement would be far steeper, said the Texan.
Internet users earlier posted tip-offs on the web that some factories in Weifang have allegedly been pumping polluted water some 1, 000 metres below ground, Global Times and Xinhua report.
The technique they developed, called hydraulic fracking, involves drilling 5, 000-9, 000 feet below ground (in the Marcellus shale), and then moving horizontally into the layers of shale rock where the hydrocarbons lie.
Sirius proposes to process the ore at a site at Wilton, near Middlesbrough, and plans to transport it via a steel pipeline buried a minimum of 3ft 11in (1.2 m) below ground.
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While there are separate entrances, the two generations share a kitchen and dining room, one floor below ground, with red leather chairs around a simple table topped with an antique, three-piece candelabra set.
But the Air Force then calculated that a payload of thirty-two smart bombs, each weighing two thousand pounds, would be required to penetrate thirty feet below ground, insuring that any bunkers would collapse.
It is expected to reveal the less salubrious parts of Roman London outside of the City walls with archaeologists anticipating to encounter Roman timber-framed buildings and a street surface 6m below ground level.
Copiapo, Chile (CNN) -- Chile's mining minister expressed optimism Thursday that the 33 miners trapped since early last month 2, 300 feet (701 meters) below ground here will be rescued in early November and maybe sooner.
Patrons go below ground to play cards, sleep, exercise and work on laptops--all the while inhaling air that can have 1, 700 picocuries of radon per liter (about 1, 300 times as much as air in the average home).
Cremation or burial, open casket, closed casket or no casket, private services or public services, low-cost approach or more costly approach, above ground or below ground or indoor or outdoor final resting place were just a few of the important decisions.
But now, following the restoration, then closure due to floods and reopening earlier this year of the below ground hypogeum and the very top tier of the arena, visitors can get the view from a totally different perspective and without the crowds.
The options for shelters are many: above-ground, below-ground, mounted in the garage, on the patio, on a poured slab or even in a space carved out beneath the slab.
There's lots of storage space for sports equipment, and 150-square-foot wine rooms below both ground floors.
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