| 摘要 |
The asbestos bulk extractor includes, in a preferred embodiment, an elongated housing having a handle section normal thereto. The housing defines an interior chamber and the handle defines a through port between the chamber and a vacuum line. At one end of the housing, a transparent, rigid hood is removably attached which defines an extraction region. A coring tube is rotatably and longitudinally retained within the housing and extends beyond both ends of the housing. The coring tube has a coring end which bores into the asbestos containing material. The other end of the coring tube is manually operable such that the tube can be rotated and forced into the asbestos containing material. An extraction push piece is movably mounted within the coring tube. After the coring tube has bored into the asbestos containing material, the coring tube is withdrawn from the extraction site and the core sample held within the coring end of the tube is pushed from the tube by the push piece into a vial. During the coring operation, the hood is placed on the surface of the asbestos containing material and, since the interior region of the hood is in communication with the housing chamber and the output port, the hood is maintained at a negative pressure during the boring operation, the withdrawal of the sample and when the hood is placed over the vial to contain the sample, the vial itself is in a region of negative pressure. A method is also disclosed.
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