Soil sample liner assembly having permanently attached core catcher for use in dual tube sampling system

A dual tube soil sampling system, comprising:

• an outer tubular casing having an upper end and a lower end;
• a cutting shoe attached to the lower end of said outer casing, said cutting shoe having an annular inner ledge;
• a soil sample liner assembly placed within said outer casing, said liner assembly comprising a generally cylindrical tube having an upper end, a lower end, and a substantially smooth cylindrical outer surface extending therebetween;
• said liner assembly further comprising a core catcher positioned within said tube and permanently attached to said lower end of said tube, said core catcher comprising a plurality of inwardly and upwardly extending resilient fingers that deflect outwardly to allow soil to pass into said tube and prevent soil from falling back out of said tube;
• said liner assembly having its lower end supported by the inner ledge of said cutting shoe and being removable through the upper end of said outer casing without disturbing the attachment between the cutting shoe and the outer casing, whereby the liner assembly can be removed and replaced between successive sampling intervals while the cutting shoe and outer casing remain in the ground.

A soil sample liner assembly for use in a dual tube soil sampling system, comprising:

• a generally cylindrical tube having an upper end, a lower end, and a substantially smooth cylindrical outer surface extending between the upper and lower ends;
• and
• a core catcher positioned within said tube and permanently attached to said lower end of said tube, said core catcher comprising a plurality of inwardly and upwardly extending resilient fingers that deflect outwardly to allow soil to pass into said tube and prevent soil from falling back out of said tube;
• said core catcher having an annular bottom which is substantially flush with an outside profile of said tube, said liner assembly having a means at its lower end for engaging and resting on an annular inner ledge of a cutting shoe of the dual tube soil sampling system.