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Categories: Subterranea Drilling technology Trenchless technology Articles lacking sources from September 2007 All articles lacking sources |
Summary Of: Directional boringA small directional boring unit in action... A small directional boring unit in action... A small directional boring unit in action... Directional boring is used when trenching or excavating is not practical... Directional boring minimizes environmental disruption... Directional boring is used for installing...Encyclodia Page On: Directional boring
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