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Testing of the concept included blowing up a scale model dam at the Building Research Establishment, Watford, in May 1942 and then the breaching of the disused Nant-y-Gro dam in Wales in July. A subsequent test suggested that a charge of 7,500 lb (3,400 kg) exploded 30 ft (9.1 m) under water would breach a full-size dam; crucially this weight ...
On 24 July 1942, a "spectacularly successful" demonstration of such a weapon's potential occurred when a redundant dam at Nant-y-Gro, near Rhayader, in Wales, was destroyed by a mine containing 279 lb (127 kg) of explosive: this was detonated against the dam's side, underwater, in a test undertaken by A.R. Collins, a scientific officer from the ...
The lessons learned at Nant-y-Gro green lit the development of the "Upkeep" bouncing bombs. They were used in the 1943 Dam Busters raid when RAF Bomber Command breached and damaged several dams in the Ruhr Valley, Germany. The remains of the breached Nant-y-Gro dam are in much the same state as it was left in 1942, although partly obscured by ...
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SSSIs in the UK are notified using the concept of an Area of Search, an area of between 400 km 2 (150 sq mi) and 4,000 km 2 (1,500 sq mi) in size. [2] The Areas of Search were conceived and developed between 1975 and 1979 by the Nature Conservancy Council (NCC), based on regions created by the Local Government Act 1972. [3]
Above Nant-y-Pandy the route passes the site of the reservoir that provided water power to the mill's overshot waterwheel, before the formation is breached by the valley road. Above Ty'n y Wern the tramway formation reappears on the hillside above the road, past Tan-y-Graig, until the road climbs up and takes over the tramway route.
Multiple clashes left at least 16 people dead on the same day that a car bomb left outside a police station in western Mexico wounded three officers. ... Guerrero, one of Mexico's poorest states ...
The reservoir emptying through the failed Teton Dam on June 5, 1976 Ruins of the dam of Vega de Tera (Spain) after breaking in 1959. A dam failure or dam burst is a catastrophic type of structural failure characterized by the sudden, rapid, and uncontrolled release of impounded water or the likelihood of such an uncontrolled release. [1]