The Environmental and Engineering Geophysical Society (EEGS) is excited to present this week’s highly anticipated GAINS 2026 Training Module focused on Geophysical Borehole Logging.

As part of the GAINS (Geophysical Applications in Near Surface) 10-week virtual training series, this session will explore real-world borehole applications and case histories, providing practical insight into how borehole logging supports engineering and environmental investigations.

Whether you are looking to expand your technical knowledge or refresh your understanding of borehole geophysics, this module delivers actionable takeaways from industry experts.

Featured Presenters

Lia Martinez – Senior Geophysical Engineer, Mount Sopris Instruments

Darin Pendergraft – Vice President, GEOVision Geophysical Services

Both presenters from Mount Sopris Instruments and GEOVision Geophysical Services bring extensive experience and will share case histories demonstrating how borehole logging tools and data interpretation inform decision-making on real projects.

Event Details

Thursday, February 12, 2026
2:00 PM (Mountain Time)
Virtual Event
Exclusive to EEGS Members

How to Attend

This session is available exclusively to EEGS members.

Not yet a member? Join EEGS first, then complete your registration. Once registered, you will receive the session link directly.

Don’t miss this opportunity to gain practical insight into borehole logging applications and connect with fellow geophysical professionals through GAINS 2026.

We look forward to seeing you there!

Join Us at AGTW’s Florida Groundwater Conference in Orlando

We’re excited to be attending AGTW’s Florida Groundwater Conference on January 27–28 at the Florida Hotel & Conference Center in Orlando, and we hope to see you there!

As part of the conference program, Geophysical Engineer Kyle Dawson will be presenting on Logging Vehicles and how these purpose-built platforms can optimize geophysical logging for groundwater applications. His talk will explore how logging vehicles improve efficiency, safety, and data quality in the field, while helping streamline groundwater investigations.

Be sure to stop by our booth during the event to connect with out team. We’ll be available to discuss:

• Geophysical tooling for groundwater applications
• The recent release of WellCAD 6.0
• How custom logging vehicles can be integrated into your operations to improve workflows and productivity

We look forward to connecting with fellow groundwater professionals and sharing meaningful conversations and insights on all things groundwater. See you in Orlando!

Find us at Booth #1127 at AGU25 Annual Meeting in New Orleans!

Mount Sopris Geophysical Engineer, Emily Moren, and Technical Program Manager, Hanna Flamme, are thrilled to exhibit at the 2025 AGU Annual Meeting – Where Science Connects Us. The American Geophysical Union (AGU) is an international scientific society with more than 60,000 members in 137 different countries! This annual conference will take place December 15-19, 2025 at the New Orleans Ernest N. Morial Convention Center. You can find Hanna and Emily at Booth #1127 ready to connect with colleagues, customers, and friends throughout the week. Stop by for live demonstrations and to learn how our latest geophysical logging technologies and solutions for R&D are helping geoscientists around the world deliver accurate and reliable data.

We look forward to connecting with you at the AGU Annual Meeting!

Mount Sopris Instruments recently had the opportunity to support the Nevada Gold Mines team at the Turquoise Ridge Mine in Nevada, United States. Geophysical engineer Emily Moren visited the site to deliver hands-on training for their new borehole logging system, which includes the QL40-OBI-2G Optical Televiewer, Truck-Mounted WFA Winch, and ScoutPRO Data Acquisition System.

Day 1: Equipment Setup and Field Operation

Training began with the full on-site installation of the logging system inside the team’s dedicated logging trailer. After setup, Emily worked with the Nevada Gold Mines staff to conduct test logging and review proper operation of each component. Team members were able to:

• Walk through equipment setup from start to finish
• Review maintenance best practices and address system questions
• Run the QL40-OBI-2G Optical Televiewer downhole using the Logger Software Suite
• Gain confidence in real-world logging procedures

This first day emphasized practical field workflow and ensured the team was ready to deploy the system independently.

Day 2: WellCAD Training and Data Processing

The second day focused on software training using WellCAD, including an introduction to the Deviation Module. During the session, the team learned how to:

• Import optical televiewer and auxiliary data
• Perform essential QC steps
• Format logs and apply consistent templates
• Add comments and create clear, interpretable final outputs

By the end of the session, attendees had a solid understanding of how to manage and interpret their new datasets within WellCAD.

A Collaborative, Application-Focused Experience

Three Nevada Gold Mines team members participated in the training, each bringing valuable insights from their on-site operational experience. The visit provided an excellent opportunity to understand their specific applications underground and collaborate on solutions tailored to their logging environment.

Mount Sopris Instruments is proud to support Nevada Gold Mines with both equipment and training, helping ensure successful integration of their new optical televiewer system into ongoing geological and geotechnical workflows.

Mount Sopris Instruments will be exhibiting at the 2025 Edition of the American Exploration and Mining Association (AEMA) annual meeting. As one of the most historic and premier mining conferences in North America, industry experts and company partners from across the field with be in attendance to share valuable insights, new products, and available services. Geophysical Engineer Kyle Dawson will be representing Mount Sopris Instruments at Booth #427 at The Nugget Casino and Resort in Sparks, Nevada from Wednesday December 10th to Friday December 12th. As a global leader in borehole geophysical instrumentation, Mount Sopris Instruments has been producing tools for the mining industry for over seven decades. Based in Denver CO, Mount Sopris Instruments provides a full suite of borehole geophysical tools, software, and deployment solutions for purchase and rental with a dedicated sales and support team. Come learn more about the what’s available in latest release of WellCAD 6.0 and the new Geomechanics Workspace and how it can be utilized to derive mechanical properties within a dedicated intuitive workspace. Stop by to discuss your borehole geophysics application and to see if Mount Sopris Instruments can provide a hardware or software solution to help improve your workflow. We are excited to continue to participate in the AEMA annual conference and look forward to meeting with everyone in Sparks.

Mount Sopris Instruments Inc. (“MSI”), a leading U.S. manufacturer and distributor of geophysical equipment and software, and its parent company Advanced Logic Technology S.A. (“ALT”), a global leader in borehole imaging and geoscience software, announced today that their shareholders have entered into a binding agreement to sell 100% of the shares of both companies to IMDEX Limited (ASX: IMD), an Australian-listed mining technology group. The acquisition brings together three industry pioneers to create the most advanced integrated subsurface intelligence offering for exploration, development, and resource management.

A Strategic Combination

IMDEX’s acquisition of MSI and ALT unifies complementary strengths: – MSI’s rugged and dependable geophysical logging systems,

• ALT’s world-class borehole imaging instruments and industry-standard WellCAD software, and
• IMDEX’s global technology platform and cloud-connected subsurface intelligence solutions.

Together, the combined group will deliver deeper insights, faster decision-making, and enhanced global support for clients across the mining, geotechnical, water, and energy sectors. The partnership significantly expands MSI and ALT’s global reach and accelerates innovation across their product portfolios.

Shareholder Perspectives

John Weerstra, CEO of Mount Sopris Instruments, said:

"Mount Sopris Instruments has spent decades building a reputation for dependable equipment, thoughtful engineering and close relationships with the people who rely on our products and services every day. This next chapter allows us to carry that legacy forward in a much larger and more efficient way. By joining the IMDEX ecosystem, we gain the ability to reach new customers in parts of the world that have been difficult for a small manufacturer to support, while also strengthening the service and responsiveness our longtime partners expect from us. This is a defining step in our company’s history and one that opens the door for Mount Sopris to contribute even more to the future of subsurface insight and innovation."

Jean-Luc Deltombe, founder of ALT, commented*:*

“For over 30 years, ALT has delivered precision, reliability, and innovation in borehole imaging and downhole measurement. IMDEX’s acquisition is a proud moment for me, my fellow shareholder Annick Henriette, our management, and all our staff. IMDEX’s global platform and technical depth provide ALT and MSI the scale to accelerate innovation and deliver even greater value across mining, geotechnical, water, and energy sectors.”

Looking Ahead

IMDEX’s investment represents a strong vote of confidence in MSI and ALT’s vision, products, and teams. Both organizations will continue operating from their existing headquarters in Denver and Luxembourg, supported by IMDEX’s worldwide resources and capabilities. The transaction is subject to foreign direct investment approval in Luxembourg and other customary closing conditions, with completion expected in early 2026.

About Mount Sopris Instruments (MSI)

Mount Sopris Instruments, based in Denver, Colorado, is a leading manufacturer and distributor of borehole geophysical equipment and software for subsurface investigations, with a decades-long reputation for reliability, innovation, and customer support.

About Advanced Logic Technology (ALT)

Advanced Logic Technology, headquartered in Luxembourg, is a global leader in borehole imaging instruments and geoscience data processing software. Its flagship WellCAD platform is the industry standard for borehole data visualization and interpretation, supporting clients in more than 120 countries.

About IMDEX Limited

IMDEX Limited (ASX: IMD) is a global mining technology leader that enables resource companies and drilling contractors to safely find, define, and mine orebodies. Its integrated solutions combine advanced downhole sensors, cloud-connected technologies, and data analytics to deliver real-time subsurface intelligence for improved decision-making and operational efficiency.

Advisers

PwC Luxembourg, represented by Matt Moran, Mehdi Sribi, and Paolo Pomodoro, served as exclusive M&A advisor to the ALT shareholders. Vendor Assistance support was provided by Beril Akcicek and Pedro De Miranda. Legal counsel was provided by Tim Doll of Vertumnus.

Media Contacts

**Mount Sopris Instruments Inc.**John Weerstra, CEO Phone: +1 303 279 3211 Website: www.mountsopris.com**Advanced Logic Technology S.A.**Robert Schwetzke, CEO Phone: +352 28 56 151 Website: www.alt.lu

We are excited to announce the release of WellCAD v6.0, a major update that delivers powerful new capabilities—including the launch of the Geomechanics Workspace, an integrated environment designed to accelerate rock mechanics analysis, stress modeling, and fracture stability workflows. This release delivers substantial enhancements across the WellCAD platform to streamline interpretation, strengthen data quality, and improve workflow efficiency.

A New Era of Geomechanical Analysis in WellCAD

The all-new Geomechanics Workspace introduces rock mechanics, in-situ stress computation, and fracture stability assessment into a single interactive module. Instead of juggling multiple software packages, users can now perform end-to-end geomechanical workflows entirely within WellCAD. Built to serve subsurface engineers, geoscientists, and geomechanics specialists, the workspace automates key calculations, reduces manual effort, and enables faster, more confident decision-making—ultimately improving operational safety and reducing geotechnical risk.

Key Capabilities Inside the New Geomechanics Workspace

Rock Mechanics Analysis

Compute critical mechanical properties using default methods or custom formulas, including: – Young’s Modulus (dynamic & static)

• Poisson’s Ratio
• Unconfined Compressive Strength (UCS)
• Shear & Bulk Modulus
• Tensile Strength
• Friction Angle & Cohesion

The following video demonstrates how to use WellCAD’s Geomechanics Workspace to calculate and calibrate key rock mechanical properties, including Poisson’s ratio, Young’s modulus (dynamic and static), and UCS. Using sonic, density, and core data, the workflow shows how to apply theoretical and empirical methods, reconcile logs with lab data, and generate borehole views for reporting. Ideal for geologists, geophysicists, and engineers interested in WellCAD’s new geomechanics tools. [embedyt] https://www.youtube.com/watch?v=joqtxC1jrzI[/embedyt]

In-Situ Stress Calculation

Build complete stress models with tools for calculating: – Hydrostatic pressure

• Vertical stress
• Pore pressure
• Minimum & maximum horizontal stresses

The video below provides a step-by-step walkthrough of stress calculations in the WellCAD Geomechanics workspace. Starting from raw wellbore data, the video demonstrates how to build a workflow for hydrostatic pressure, vertical stress, pore pressure, and horizontal stresses.[embedyt] https://www.youtube.com/watch?v=f-YoyYttLgg[/embedyt]

Fracture Stability & Mohr-Coulomb Analysis

Evaluate fault and fracture reactivation potential with: – Interactive Mohr-Coulomb circle visualization

• Integrated logplot comparison
• Automatic overlay of ISI-interpreted fractures
• Slip-tendency and fracture susceptibility calculations

Highly Interactive, Zone-Specific Modeling

The Geomechanics workspace supports: – Geological zonation with custom parameters per interval

• Real-time recalculation as inputs change
• A Custom Equation Editor for building and storing user-defined methodologies

This gives users full flexibility to adapt workflows, test variables, and refine results instantly.

New Visualizations in WellCAD v6.0

Box Plots

Visually explore data distribution, variability, and outliers across wells, zones, or lithologies for clearer insight into trends and anomalies. The boxplots allow a simple visualisation for well logs but also by log type to support effective classification and comparison.

Spider Plots

Compare multiple parameters with a clear radial view of rock mechanical properties, log responses, or stress indicators. With interactive features and zonation filters, it streamlines the interpretation of complex geotechnical data and supports more informed decision-making.

Script Console for Automation

The updated Script Editor now includes an Execution Console that displays real-time compilation feedback, status updates, and error logs—making script development faster, clearer, and simplifies debugging. Whether you’re running basic automation or complex custom scripts, the console streamlines development with clear, actionable insights that accelerate troubleshooting and improve script reliability.

To see what’s new in WellCAD v6.0, check out the video below!

[embedyt] https://www.youtube.com/watch?v=ZGskKjYySU0[/embedyt]

Mount Sopris Instruments is excited to announce that Hanna Flamme (Technical Program Manager) and Emily Moren (Geophysical Engineer) will be exhibiting at NGWA Groundwater Week 2025, one of the premier events in the groundwater industry! This year’s conference promises to be an inspiring and engaging gathering of professionals, innovators, and advocates dedicated to advancing groundwater science and technology. Hanna and Emily are also thrilled to attend the **Evening at the National World War II Museum (optional ticketed event) from 6:00 – 8:30 PM on Monday, December 8.**We can’t wait to connect with colleagues, customers, and friends throughout the week. Visit Mount Sopris Instruments at Booth #2141, where we’ll be showcasing our MSI360 Digital Borehole Camera that provides five simultaneous views and runs from your cell phone! Make sure to stop by to see this innovative borehole camera system and learn about our full suite of groundwater logging tools, including portable winches, flowmeters, gamma, and electrical resistivity probes. Stop by for live demonstrations and to learn how our latest geophysical logging technologies and solutions are helping groundwater professionals deliver accurate, reliable data around the world.

Event: NGWA Groundwater Week 2025, New Orleans Ernest N. Morial Convention Center – Exhibit Halls G & H Location: Booth #2141 Dates: December 9-11, 2025, link to schedule HERE[embedyt] https://www.youtube.com/watch?v=AyIw0YMROSY[/embedyt]

Hanna Advances to Technical Program Manager at Mount Sopris Instruments

We’re excited to share some great news from the Mount Sopris team! Hanna Flamme, who many of you know as one of our Geophysical Sales Engineers, is stepping into a new role as Technical Program Manager. This change allows Hanna to continue doing much of what you already know her for — traveling to trade shows, supporting trainings, and working directly with customers on specifications and technical questions — while also giving her dedicated time to focus on strategic, long-term projects that benefit our customers and partners. In her new role, Hanna will spend most of each day working on initiatives that help improve how we deliver solutions and support. This will involve streamlining processes, managing complex sales such as borehole logging vehicle builds, handling international radiation licensing, and developing specialized training programs. For our customers, this means you’ll continue to see Hanna in a familiar capacity — helping with technical questions, supporting your projects, and collaborating on solutions — but with even more ability and time to focus on big-picture improvements that make your experience with Mount Sopris even better. We’re excited about the impact this new role will have on how we serve you, and we look forward to sharing the results of these initiatives in the months ahead. If you have ideas for process improvements, long-term projects, or unique challenges that could benefit from Hanna’s expertise, you are encouraged to reach out to her directly at For sales inquiries, please reach out to our Geophysical Sales Engineer staff at sales@mountsopris.com for the fastest response.

Logging in the field is a demanding profession that combines technical expertise, safety awareness, and practical efficiency. As Mount Sopris Instruments Chief Technology Officer Curtis puts it,

“Anyone who has logged long enough will eventually have a day where things go bad or came close to being bad.”

The key to success is learning from those moments and from the advice of experienced loggers who have been there before. Below are some of the top recommendations for new and seasoned loggers alike, covering equipment care, safety, efficiency, and technical best practices.

Advice for New Loggers

Protect the wireline.

The wireline is your lifeline in logging. Avoid kinking or bending it beyond its specified bend radius—typically 7–9 inches (18–23 cm) for common single- and four-conductor cables. Always use sheave wheels larger than that radius to extend the life of the cable.

Check the cablehead frequently.

Use a high-range multimeter to confirm electrical isolation of at least 20 MΩ before connecting a tool. This quick 15-second check should be done every time you switch tools. If the cablehead doesn’t meet the threshold, you will need to rehead your cable.

Minimize distractions.

Never chat while actively logging. Even a brief conversation can result in missed depth readings, tangled wireline, or worse. If you must interact with a colleague or customer, stay especially vigilant near the bottom of the hole to avoid creating a “rat’s nest” of cable.

Safety First

Field conditions are unpredictable, but you can reduce risks with a few precautions: – Power down before handling tools. Resistivity tools should always be turned OFF before placing them in or removing them from the borehole. Failure to do so can result in electric shock.

• Ground your equipment. Generators in remote areas can produce unstable power. Use additional grounding rods when needed for the winch or generator.
• Prevent trip hazards. Thin wireline can be easy to overlook. Safety cones around cable paths help protect both people and equipment.
• Know your gear. Familiarity with your setup allows you to react quickly if something goes wrong.

Working Efficiently

Efficiency in logging is less about rushing and more about preparation and organization: – Stay organized. A clean, well-laid-out logging truck makes set-up and take-down much faster. Develop a consistent workflow or standard operating procedure to minimize downtime.

• Test equipment in advance. Don’t wait until you’re onsite to find out a probe isn’t working. Run through your setup in the shop before heading out, especially if it’s been a while since the last job or you’re using unfamiliar tools.
• Be prepared. Confirm your probes, winch, and system are field-ready before arriving at a jobsite. This preparation saves both your time and your customer’s.

Technical Tips for the Field

Small details often make the difference between a smooth logging run and wasted hours: – Never assume a freshly reheaded cablehead is good—test it.

• Learn how to rehead properly.
• Always bring a digital voltmeter (DVM).
• Carry spare parts for quick fixes; leave major repairs for the shop.
• Verify valid tool readings on the surface by logging in time mode. Zeros will record flat lines and waste your entire run.
• Double-check connections—“Is it plugged in?” is a surprisingly common oversight.
• Watch for depth errors caused by a dirty encoder wheel.
• Use clean, reliable power—cheap power sources lead to bad data.
• Don’t leave probes baking in the sun before use.
• Collect good data the first time. Bad data can’t be fixed later.
• If you suspect a tool issue, rerun that section for a repeat log. You might not get another chance.

Final Thoughts

Logging is equal parts technical know-how, discipline, and field awareness. Mistakes are inevitable, but by following expert advice—protecting your wireline, prioritizing safety, staying organized, and double-checking data—you’ll avoid many of the pitfalls that can derail a logging job. As Curtis reminds us, every logger has a tough day eventually. The difference between a minor hiccup and a major problem often comes down to preparation, attention, and applying lessons learned from those who have logged before you.