HWT Casing Advancer For Soil Sampling Overburden Drilling Functions: 1. Roschen provides a full line of wireline casing advancers for soil sampling and overburden coring in conjunction with casing. These can also be used for casing through difficult overburden or formations. 2. Provides a positive latch for a one-step method of drilling through overburden and casing off to bedrock. Details: Roschen Wireline Casing Advancer has been designed to allow drilling and casing to be