Importance

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Abstract

A soil sample liner assembly having a permanently attached core catcher is disclosed for use in a dual tube sampling system. The liner assembly includes a generally cylindrical tube having an upper end, a lower end, and a substantially smooth cylindrical outer surface extending between the ends. A core catcher is positioned within the tube and permanently attached at its lower end. The core catcher includes a plurality of resilient fingers that deflect outwardly to allow soil to pass into the tube and prevent soil from falling back out. The liner assembly has its lower end supported by an inner ledge of a cutting shoe of the dual tube sampling system. The liner assembly with the permanently attached core catcher is removable through the upper end of the outer casing without disturbing the attachment between the cutting shoe and the outer casing while the sampling system remains in the ground.

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First Claim