| 摘要 |
A method and apparatus are disclosed for clearing debris and for retrieving lost materials from slanted boreholes. The apparatus has a central shank which is attachable to drill pipe and an auger-like helical plate wound around the shank. A cylinder with a back plate and partial front plate encloses the helical plate. In practicing the method, debris is cleared and lost materials are retrieved from a slanted borehole by rotation of an auger-like apparatus, preferably the apparatus of the invention, along the path of the borehole.
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