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News & Events

Groundwater Picture of the Month – March

Picture of the month prepared by Andrew Stone, Hydrogeologist, (andrewstone  @  gmail.com) The basic mechanism of ground surface subsidence is the compaction of sediments resulting…

Collier Conferences in March 2025

Every month Collier sends out employees all over to several conferences, see below to find out if you can catch us at any! Geotechnical Frontiers…

Leaving a Legacy!

Congratulations to Phil Sirles on his well-deserved retirement after an impressive 40+ year career in the engineering geophysics industry. Since joining Collier in 2018 as…