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    Montauk Project:Third Underground Video of Philidelphia Experiments using Telepathy, Mind Control. Nicola Tesla and UFO's and the Levenston Zero point Equations

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    Much of the early technology of tunneling evolved from mining and military engineering.The etymology of the terms "mining" (for mineral extraction or for siege attacks), "military engineering", and "civil engineering" reveals these deep historic connections.

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    The "invention" of a machine capable of excavating large-diameter tunnels in hard rock was one of the greatest achievements in the history of tunneling.

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    Working models of the suberranean section of the Great Pyramid. A hydraulic pulse generator and water pump built with the subterranean chamber.

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    A road header machine called a boom type road header. Road headers are advanced, self forced and extremely powerful rock cutting machines are designed to excavate roadways, tunnels and compartments […]

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    Earthbending, one of the four elemental bending arts, is the geokinetic ability to manipulate earth and rock in all their various forms, prevalent in the Earth Kingdom and the United Republic.

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    Abutment — In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway; and (2) the weight of the rocks over a longwall face is transferred to the front abutment, that is, the solid coal ahead of the face and the back ...

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