In situ stress measurements at the Rock Island Dam, Wenatchee, Washington
In October 2025, DA Smith started a multi-phase overcore drilling campaign at the Rock Island hydroelectric dam on the Columbia River in Wenatchee,
In October 2025, DA Smith started a multi-phase overcore drilling campaign at the Rock Island hydroelectric dam on the Columbia River in Wenatchee,
In April 2025, DA Smith started a multi-rig geotechnical drilling and testing campaign at Discovery Land Com
In October 2024, DA Smith successfully completed a two-year surface drilling campaign for the U.S.
DA Smith started the 2024-25 Phase 1 drilling and instrumentation campaign at Denver Water's Gross Reser
The Connors 20HH is a powerful and versatile frame-mounted diamond core drill for long-hole underground drilling. The 20HH is transportable on a dual axle frame. Wheels and axles can be removed for transport and operation in tighter spaces. Mast height can be varied to setup in entries as low as 7 feet to more than 12 feet high. Holes can be oriented at any angle.
Coring Depth Capacity
Reaming Capacity
As of May 2024, DA Smith is core drilling at Dominion Energy's Roanoke Rapids Dam near Roanoke Rapids, North Carolina.
Mobility
Engineered for mobility, the LF™90D surface coring drill features a telescoping mast with dump capability. The telescoping features afford a compact size during transport while the dump capability lowers the working height of the machine to enable mounting on a crawler or skid.
Reliability
A simple hydraulic and structural design makes this drill easy to operate and maintain.
As of March 2024, DA Smith is core drilling in salt at Morton Salt's Weeks Island Mine near New Iberia, Louisiana.