Malcolm Drilling Co., Inc.

Scope Of Work

The BNSF Vader Project, in Castle Rock, Washington, provided an opportunity for Malcolm Drilling to showcase its unique skillset and vast capabilities. We were tasked with installing 10’ diameter drilled shafts up to 200 feet in depth, each with a 15 foot deep rock socket into basalt with an unconfined compressive strength of up to 40,000 psi. The permanent casing had to be installed by one of our oscillator machines without vibration due to the close vicinity of an existing BNSF railroad bridge. Rock drilling was performed by one of our Liebherr LB44 rotary drilling machines using rock augers, buckets and core barrels. Increasing the difficulty of the project, all of this had to be completed from a work trestle. Despite all of this, the project was carried out professionally and on time.