Connecting drill stem to the top head drive on the USGS Research Rig

(Credit: David L. Nelms, USGS. Public domain.)

Detailed Description

Connecting drill stem to the top head drive on the USGS Research Drilling program’s rig.

Image Dimensions: 3872 x 2592

Date Taken: Saturday, August 20, 2016

Location Taken: VA, US

David L. Nelms, USGS