Safe, Easy Operation Makes 3100GT Ideal for New Drillers, State Agencies

Cost-efficient mobilization, safety features (below) and ease of operation have made the 3100GT a valuable rig for training new drillers while providing the operating versatility and comfort desired by experienced drillers. State agencies and engineering firms especially appreciate the ease of operation and added safety.

Control panel on passenger side puts distance or line of sight between operator and on-coming traffic.
Raising the mast with the winch system retracted, before telescoping up the winch reduces ultility-line collisions. Winch is fully functional at all positions.
Manual controls provide tactile feel.
Electric controls provide for safe, hands-free operation.
Control panel and driver side both include a safety E-stop. Safety pull cable between the control panel and the head adds another layer of safety.

Probing Times Articles

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NEW 3126GT: Simplify Your Geotech Dream of swiftly sliding from rotary to automatic drop hammer without having to reposition mast or machine? The innovative centerline head side shift is a reality on the NEW 3126GT... Probing Times Summer 2020 > Read More	Seasoned Drillers Praise Next Generation Machine Reducing time transitioning between functions with the centerline head side shift is just one of the advantages afforded by the NEW 3126GT... Probing Times Summer 2020 > Read More	Already a Fan of the 7822DT? The NEW 3126GT turns the efficiency of the 7822DT up another notch... Probing Times Summer 2020 > Read More	Confidence to Close High-profile Forensic Jobs When MLA Geotechnical found themselves in need of a truck-mounted drill rig to complete thousands of borings per year in hard clays and limestones, the Geoprobe® 3100GT quickly became their top choice... Probing Times Summer 2020 > Read More
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PFAS Testing of Groundwater Samplers: Q&A with Wes McCall, Geoprobe® geologist Geoprobe® conducts PFAS tests on groundwater sampling products, results, and recommendations for performing groundwater sampling for PFAS compounds... Probing Times Summer 2020 > Read More	Geoprobe® PVC Liners Tested Nondetect for 52 PFAS Compounds Geoprobe® PVC liners tested nondetect for all 52 PFAS compounds... Probing Times Summer 2020 > Read More	Distinctly Different DM450 With a 140-foot open hole and casing ready to set, Bush Services noticed the hole starting to cave in. Fortunately the operator abandoned the rig as it started sliding backward — into a sinkhole... Probing Times Summer 2020 > Read More	DM450 Takes on the Rocky Mountains A recently delivered DM450 drilling geothermal wells at a university at the base of the Rocky Mountains... Probing Times Summer 2020 > Read More
Island Geo Drillers Take Geothermal Business to the Next Level with Fast, Powerful DM250 Launching Island Geo Drillers in New York five years ago, Joe Dalba and partner Ryan Maletta were ready to take their closed-loop geothermal installation business to the next level... Probing Times Summer 2020 > Read More	Proper Care for Aging 7822DT Rigs In production for more than 12 years, the Geoprobe® 7822DT is a workhorse in many company fleets. If you've had your rig for a few years, it may be showing some signs of age. Three key components on the front of the 7822DT deserve periodic inspection... Probing Times Summer 2020 > Read More	Multiple Service Options Available Understanding the difficult job you face servicing drill rigs when they are busy performing field work, the service centers – in Kansas and Florida – offer several different options to meet your needs... Probing Times Summer 2020 > Read More	Southeast Service Shop Our Ocala, Florida, service team is growing... Probing Times Summer 2020 > Read More
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No CDL Required: Saves Customers Money & Hassle Geoprobe® continues to engineer machine configurations that allow drilling companies to mobilize to and from projects without the use of a CDL.. Probing Times Spring 2018 > Read More	DT22 Detent Drive Head Makes Soil Sampling Faster & Easier! Geoprobe® has developed an all new drive head for the DT22 Soil Sampling System – making an already efficient system even faster and easier... Probing Times Spring 2018 > Read More	VIMS uses 66DT to peer into the past, plan for the future The Virginia Institute of Marine Science (VIMS) uses their 66DT to dig up the past – literally – along Virginia’s Eastern Shore barrier islands... Probing Times Spring 2018 > Read More	Geoprobe® 4.5 in. Heavy Duty Sonic Rods are Stronger, Last Longer The Geoprobe® 4.5 in. heavy duty (HD) sonic drill rods are significantly stronger than their traditional counterpart and manufactured at our facility in Salina, KS... Probing Times Spring 2018 > Read More
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Drillers choose 1.75 in. probe rod for size, durability Our NEW Geoprobe® 1.75 in. probe rods are stronger, last longer, and can be used for multiple applications... Probing Times Spring 2018 > Read More	Geoprobe® Opens Regional Service Center in Florida One of our main company objectives at Geoprobe® is to PROVIDE TOP SERVICE IN THE DRILLING INDUSTRY... Probing Times Spring 2018 > Read More	3230DT’s 80,000 lb. of pull back gives Shepler Well Drilling peace of mind Shepler Well Drilling, Inc., of Manton, MI, was in the market for an auger rig when they set their sights on the 3230DT... Probing Times Spring 2018 > Read More	Limited Site Access for HD Sonic Drilling Jim Nidzgorski, of HD Sonic Drilling in East Palestine, OH, mobilized their Geoprobe® 8140LC Rotary Sonic inside an... Probing Times Spring 2017 > Read More
EnviroProbe Packs Double Punch With Sonic & 3230DT The Force is definitely with EnviroProbe Integrated Solutions, Inc., when it comes to... Probing Times Spring 2017 > Read More	Geoprobe® Sonic Broadens M&W Drilling’s Services The vision at M&W Drilling, LLC, has been to aggressively expand drilling capabilities to provide a broader range of services to existing clients as well as to attract new ones.. Probing Times Spring 2017 > Read More	Walker Hill Field Team Completes Abandonment of 48-in. Discharge Pipe Unused since the early 1970s, a 48-in. diameter discharge pipe in a 2-million-gallon industrial wastewater lagoon... Probing Times Spring 2017 > Read More	Glacier Drilling Hosts ‘Sweet’ Sonic Drilling Field Demo Glacier Drilling, in Durham, CT, designed a “Sonic Drilling Overview and Field Demonstration” course last... Probing Times Spring 2017 > Read More
Huss Drilling Uses Multiple Rigs at Florida Site In the spring of 2015, Huss Drilling, Dade City, FL, embarked on a large environmental project in... Probing Times Spring 2017 > Read More	Understated and Over Delivered The success of their first Geoprobe® 8140LS Rotary Sonic rig and associated tooling led McMillan Drilling to... Probing Times Spring 2017 > Read More	“There’s no way we’re not going to be successful!” Dolese Brothers in Oklahoma City, OK, was founded before Oklahoma became... Probing Times Spring 2017 > Read More	Aztech Likes Versatility of 3230DT Rig The 3230DT Combo Rig has seemed to ‘fill the bill’ for Aztech... Probing Times Spring 2017 > Read More
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EPI: Two Thumbs Up For Air & Mud Rotary Drilling with 7822DT Environmental Probing Investigations, in Cream Ridge, NJ, has been... Probing Times Spring 2017 > Read More	Leaking CPT Holes Cause Problems An artesian effect was causing a problem... Probing Times Spring 2017 > Read More	Stearns Drilling’s 7822DT .. Outstanding in its Field Probing Times Spring 2017 > Read More	7822DT Meets Required Checklist for Holocene Drilling’s Urban Needs Holocene Drilling, Inc., servicing the Seattle, WA, and Portland, OR, markets... Probing Times Spring 2017 > Read More
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390 Times and Not One Failure After completing 65 borings in... Probing Times Spring 2017 > Read More	6620DT Keeps on Tickin’ In 2008, when Strongarm Environmental Field Services first purchased their Geoprobe® 6620DT... Probing Times Spring 2017 > Read More	Geo Logic Makes the Most of Their Investment “While anyone in their right mind would... Probing Times Spring 2017 > Read More	ASTM Award for Wes McCall Wes McCall, PG, Geoprobe® Environmental Geologist, will receive... Probing Times Spring 2017 > Read More
Multiple Options for HPT Logging Since the release of the Hydraulic Profiling Tool (HPT) in 2006... Probing Times Spring 2017 > Read More	Enhanced In Situ Soil Analysis The success of soil investigations and remediation designs is highly dependent o.. Probing Times Spring 2017 > Read More	Demand High for Using OIP System From Vista GeoScience Clients John Fontana, PG and President/CEO of Vista GeoScience in Golden, CO, and his direct sensing team are... Probing Times Spring 2017 > Read More	Optical Image Profiler (OIP) The Optical Image Profiler (OIP) is a direct push probe that uses UV fluorescence to... Probing Times Spring 2017 > Read More
Searching for DNAPL Using Direct Image® Tools 2C2, Inc., in Raritan, NJ, was contracted by B Probing Times Spring 2017 > Read More	Mapping DNAPL With MIP Most MIP (Membrane Interface Probe) work is performed to map... Probing Times Spring 2017 > Read More	32 Series: This Machine Will Produce For You! The 3230DT and 3200 are TRUE combination machines, which means their utilization rates go up simply because they are well suited for both... Probing Times Spring 2016 > Read More	3230DT Fits Our Geotech Needs Within weeks of joining the Applied Geotechnical Engineering Consultants (AGEC) drill rig lineup, they tested the limits of the... Probing Times Spring 2016 > Read More
Mission: Complete In order to meet the Canadian military’s potable water needs, ALTECH Drilling and Investigative Services in Cambridge, Ontario... Probing Times Spring 2016 > Read More	Scenic Backdrop for Erie Lake Project Drilling Engineers in Fort Collins, CO, designed a barge, specifically for their Geoprobe® 7822DT to complete a pre-feasibility study... Probing Times Spring 2016 > Read More	7822DT Arrives at Sir Sandford Fleming College The Resource Drilling and Blasting program at Sir Sandford Fleming College welcomed their new 7822DT in January.. Probing Times Spring 2016 > Read More	EPI Targets Air Rotary/Hammer Work for 7822DT Tony Pressimone, Operations Manager for Environmental Probing Investigations in Cream Ridge, NJ... Probing Times Spring 2016 > Read More
Portable Hydraulic Rod Clamp Get rid of the pipe wrenches and use the Geoprobe® Portable Hydraulic Clamp that can be attached to most 6620DT, 7720DT, 7730DT, 7822DT, and 6712DT machines... Probing Times Spring 2016 > Read More	New Technology: Commercial Release of Direct Image® OIP Logging Tool The Direct Image® Team at Geoprobe Systems® proudly announces the commercial release of their newest Direct Image® logging tool ... the Optical Image Profiler (OIP)... Probing Times Spring 2016 > Read More	MIP Quickly Delineates PHC Impacts Vertex Environmental was retained to complete a large in-situ chemical oxidation injection remediation project by the provincial government in northern Ontario, Canada... Probing Times Spring 2016 > Read More	I’m having problems passing the HPT Reference Test and my HPT Line Pressure is High. What’s my problem? Soil build-up behind the HPT screen is easy to troubleshoot by removing the HPT screen. Does the line pressure return to normal, and are you able to pass... Probing Times Spring 2016 > Read More
7822DT Early Responder for Geotechnical and Environmental Sampling A Geoprobe® 7822DT, owned by Strata Drilling Group in Richmond Hill, Ontario (Canada), was early on scene for a train derailment on March 7, 2015, north of Gogama in northern Ontario... Probing Times Spring 2015 > Read More	New Paint Always Draws a Crowd New paint. So it was no surprise that the arrival of a new Geoprobe® 3230DT Combo Rig at the American... Probing Times Spring 2015 > Read More	3230DT: Combination Drill Rig from Geoprobe® EnviroTek Environmental & Construction Services in Tampa, FL, wanted to attract more mining clients. Their new... Probing Times Spring 2015 > Read More	6712DT Low-Clearance Cylinder Addition “Valuable Modification” for Enviro-Dynamics Rob Mores, Owner of Enviro-Dynamics in Hebron, IN, ushered in 2014 with the delivery of a new 6712DT to replace his trusted 6610DT... Probing Times Spring 2015 > Read More
“We’ve sure been busy.” We’re sure busy here at Discovery Drilling, in spite of the logistically challenging projects we have scattered around Alaska. We realized... Probing Times Spring 2015 > Read More	Bridge Over Rubbled Water Minnesota Department of Transportation determines 1,150-ft. long, 220-ft. high structure will be used for highway... Probing Times Spring 2015 > Read More	Former Dry Cleaners Site Impacts CA Water Front Park The City of Monterey, CA, has envisioned providing public access to the City’s waterfront by acquiring open space since the creation of the City’s Master Plan in 1939... Probing Times Spring 2015 > Read More	Switch to Sonic? No Way! The Geoprobe® sonic rig has really done some incredible things” Robert said. “Everywhere we’ve gone it’s really impressed everyone... Probing Times Fall 2016 > Read More
Geoprobe® Sonic Weighted Wireline - A Real Game Changer for the Sonic Industry Moving things forward. That’s what the sonic weighted wireline tooling from Geoprobe Systems® does. Call it raising the bar... Probing Times Fall 2016 > Read More	Stearns Drilling On Site of Possible Vehicle Research Center Stearns Drilling mobilized their Geoprobe® 8140LS rotary sonic to the former Willow Run Powertrain Plant in Ypsilanti Township in Michigan, the site... Probing Times Fall 2016 > Read More	Sonic Double Wall 4.5 in. (SDW45) Sampling System The Sonic Double Wall 4.5-in. (SDW45) tooling system compliments the conventional sonic 4x6 system. It’s a simple and effective tooling system... Probing Times Fall 2016 > Read More	8140LC Sonic: Unmatched Versatility “As far as rig performance goes, I have to say it did very well,” Randy Crandell, Driller for Major Drilling in Salt Lake City, UT, said recently... Probing Times Fall 2016 > Read More
Indexing Rack for 10-Foot Sonic Tooling With a few basic movements and one ‘touch’ of the drill stem, sonic tooling can be loaded into the rig’s rod loader, and the machine’s functions take over... Probing Times Fall 2016 > Read More	High-Speed Coring Head for Geoprobe® Sonics While Geoprobe® sonic machines effectively core rock, sonic does tend to induce fractures in the sample. So if the job calls for accurate... Probing Times Fall 2016 > Read More	3230DT Helps Expand Services for Active Environmental Technologies Our goal at Active Environmental Technologies, Inc. was to expand the drilling division to provide a much broader range of services to... Probing Times Fall 2016 > Read More	Spring Assisted Swivel Pull Cap This is one of my favorite accessory tools. It’s simple and effective. This is a true impact-making, gotta-see-it-to-believe-it... Probing Times Fall 2016 > Read More
Air Rotary Drilling with a 7822DT Never underestimate the capability of the 7822DT! Every day, customers become aware of applications they can offer their clients based on the power... Probing Times Fall 2016 > Read More	Customers Find Success with Geoprobe® 3.75 in. Tooling Geoprobe® 3.75 in. tooling was designed in conjunction with the Geoprobe® 2.0-in. Slim Prepacks to create a more efficient... Probing Times Fall 2016 > Read More	7822DT Uses Air Rotary for Geothermal Loop Installation During the last 23 years, Tony Poulter, Vice President and Co-Owner of RAZEK in Louisburg, KS, has operated a Geoprobe® machine... Probing Times Fall 2016 > Read More	Brothers Find Employees and Geoprobe® Valuable to Grow Business In 2005, Andrew and Tony Armstrong set forward to challenge themselves by starting their own company, Direct Environmental Drilling... Probing Times Fall 2016 > Read More
GeoTek Hawaii Helps Introduce Ground Freezing Technology to Paradise GeoTek Hawaii was recently retained by Drayko Construction in Honolulu, HI, to complete an innovative project for the City and County... Probing Times Fall 2016 > Read More	Limited Head Space for 7822DT Hynes & Associates, in Salisbury, MD, recently completed another difficult drilling project using a Geoprobe® 7822DT... Probing Times Fall 2016 > Read More	GeoTest Services in San Antonio Knows How to Dial In...Limited Access Machines GeoTest Services in San Antonio, TX, completed five limited access interior borings to +/- 20 feet at the University of Houston Cougars... Probing Times Fall 2016 > Read More	54TR Mounting Options Are you looking for a limited access, specialty direct push machine? Our 54TR combines the proven 54 Series probe assembly... Probing Times Fall 2016 > Read More

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