News & Articles

  • Installing Spikes on a Tromino Seismograph Thursday, December 20th, 2018

    Many users of Tromino ENGY and Zero units have complained that the longer, pointed studs seem too tight to screw into the bottom lugs of the units. This is due, in part, to very tight tolerances when the lugs are tapped for the threads on the legs. However, there is another possibility which you must guard against and that is cross-threading.

  • Our new 12-channel hydrophone string is a skinny thing! Saturday, December 15th, 2018

    This new, slender hydrophone string is just the ticket for collecting seismic data in a narrow borehole. With a maximum outside dimension of only 1.25", the cable will easily fit into any 2" ID borehole. The cable is outfitted with (12) HTI-96 hydrophones (unamplified) at 3-foot intervals and has a 250 foot lead terminated with a Geometrics-type Bendix 61 connector at one end and a small stainless stress anchor at the other. 

  • Tempos Replaces KD2 for Thermal Properties Measurements Wednesday, October 10th, 2018

    The new TEMPOS Thermal Properties Analyzer from the Meter Group replaces the Decagon KD2 in our inventory. 

  • EXI To Discontinue Renting 200 mhz Radar Antenna Friday, October 5th, 2018

    Due to diminished demand and the advent of the highly-capable 350 mHz Hyper-stacking antennas, Exploration will soon discontinue carrying the GSSI 200 mHz analogue antenna.

  • EEGS and EAGE Team Up For SAGEEP2019 Thursday, August 30th, 2018

    The Environmental and Engineering Society (EEGS) has teamed with the European Association of Geoscientists and Engineers (EAGE) to present next year's Symposium on the Application of Geophysics to Engineering and Environmental Problems (SAGEEP) March 17-21, 2019 in Portland, OR USA.

  • Tromino Zero Adds Low-Cost Passive Seismic Option Wednesday, August 1st, 2018

    Due to increased demand for the Tromino seismograph, EXI has added two Zero units to the rental inventory. 

  • Passive Seismic Surveying with Tromino Sunday, July 1st, 2018

    The application of passive seismic measurements (VS/VP) is gaining in popularity due to the availability of small, portable all-in-one seismographs.

  • UCL to MARS Thursday, June 21st, 2018

    In 2017, we had the pleasure of working with Elke Mergny and Crew 178 from UCL to MARS program in their experimental stay at the research station in Utah. A recent article in National Geographic ( reminded us of that project and we asked Elke if she would write us a description of her time there. She graciously provided us with the following account.

  • EXI and Foerster Team for Magnetometer Survey of Andrew Jackson’s Hermitage Historical Site Monday, May 7th, 2018

    During the most recent meeting of the Environmental and Engineering Society in Nashville, TN in March 2018 (SAGEEP), a demonstration opportunity was presented to all exhibitors.

  • Exploration Instruments (EXI) Has Added a Borehole Logging System Friday, May 4th, 2018

    The system is a Mt Sopris Matrix system with a 175 meter mini winch.  In addition to most standard borehole tools, EXI has a Mt Sopris ABI-40 Acoustical Televiewer (ATV), Mt Sopris OBI-40 Optical Televiewer (OTV), Mt Sopris HFP-2293 Heat Pulse Flow Meter, and a Mt Sopris 2SAA-1000F, Full Wave Form Sonic (P and S wave) tool.