The underground double tube thin wall wireline overshot assembly is used in select mineral exploration applications. Using thinner walled cross sections for rods, tubes and diamond bit kerfs creates a larger core sample within nominal 'A' and 'B' bore holes. The AOTW-U design allows for ease of use with clear water common in underground environments or less dense drilling additives when required, and are typically chosen for more competent ground conditions and for use with high speed drills having lower pull down forces.
Funktioner og fordele
- Cost-effective maintenance
- Superior solution for on-the-job-safety