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The standard approach to moling is to dig a hole about 1 m square and 2 m deep. Such a hole is small enough that it can be dug by hand instead of by machine in inaccessible locations. The mole is then entered into the earth on the horizontal face at the bottom of this hole. A destination
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with pulsed compressed air causing the head of the mole to repeatedly hammer against the soil in front of the mole. Once the mole has passed through the earth the pipe can be pulled through the long horizontal hole.
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Recently moles that are steerable have been developed allowing an operator to correct the track of the mole and to achieve curved bores.
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hole of similar proportions is also dug, and this is where the mole emerges. The mole itself is a
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Fedotoff, Roy C.; Bellows, Peter H.; Frutchey, Robert W.; Thomson, James (1991).
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cylinder about 60 cm long and 6 cm in diameter. It works as a
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along the desired path of the pipe. Moling avoids the need to dig a
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