Built for success from day one
28.08.2025
GeoUnion Oy
GeoUnion is a Finnish company specialising in ground investigation, surveying, and design services. It has relied on Geomachine’s drilling rigs for its ground investigations from the very start of its operations. There are many good reasons behind this long-standing partnership.
Founded in 1993, GeoUnion currently employs around 30 top professionals in the fields of surveying and geotechnics. CEO Markku Savolainen explains that one of the company’s core principles has always been to ensure that its employees have the best possible conditions for success. “Our company’s success is built on our people. From the outset, we decided that our growth wouldn’t be hindered by inadequate tools – and we chose Geomachine as our drilling rig supplier.”
GeoUnion currently operates seven Geomachine rigs, the latest of which was acquired in 2024. “Over the years, we’ve tried other brands, but we’ve found that Geomachine best suits our needs. We work in some of the world’s most challenging environments, and Finland’s dense moraine soils place high demands on drilling rigs. Geomachine’s machines are designed in Finland and perform reliably in our harsh and demanding conditions. That’s why they’re the best choice for us.”
Powerful performance and other outstanding features
GeoUnion’s fleet includes Geomachine drilling rig models GM25, GM75, and GM100. “The GM75 and GM100 are particularly well represented in our fleet. They are excellent multi-purpose machines, with power optimised for their size. They also perform exceptionally well in difficult and demanding terrain.”
However, according to Markku Savolainen, there is something even more important than power and terrain capability. “For us, safety is the number one priority. Geomachine’s machines meet safety requirements extremely well, for example through remote-control capability and excellent work lighting.”
Ground investigations are carried out to understand the conditions below the surface. “I really appreciate how Geomachine has invested in technology development in recent years. The GMTracker data-logger, for example, is an innovation that has clearly streamlined practical work and improved the quality of collected data. Best of all, Geomachine hasn’t just focused on technology but also on ensuring the tool is practical in real-world use. The data-logger doesn’t flinch at cold or outdoor working conditions.”
GeoUnion uses three different Geomachine rig models, and drillers switch between them depending on the investigation requirements. “Geomachine rigs have very similar functionality across models. This makes it much easier for drillers to adapt when switching tools.”
Electrification is part of the future of ground investigation
GeoUnion often takes part in public ground investigation tenders. According to Savolainen, the requirements set for contractors are clearly changing. “We’re seeing clear signs that in future, ground investigations will need to be carried out in a more emission-free and environmentally friendly manner. The minimum requirements for tenderers are becoming stricter and more diverse. We’re definitely heading towards a more electrified ground investigation industry.”
Environmental values are important to GeoUnion and its parent group, Solwers Plc – and these values translate into concrete action. “We calculate our carbon dioxide emissions annually and compare them to previous years. Until now, we’ve reduced emissions mainly through choices in our vehicle fleet, but going forward, we’ll have more opportunities to reduce emissions through our machinery as well. Last year we acquired a GM75 Hybrid, which now enables us to carry out electric ground investigations. We’re also closely monitoring how fully electric rigs are received on the market and how they perform on actual worksites. It’s clear that we must be able to meet the increasing environmental expectations of clients – and we want to ensure we’re fully prepared for that.”

On time, professionally, and competitively
GeoUnion aims to offer its clients the highest possible quality of service, based on three core promises. “We guarantee expert, customer-oriented service. Our clients can also trust that, conditions permitting, we always complete our work on schedule. In addition, we strive to be a competitive option and respond to requests for quotation with comparable pricing.”
GeoUnion continuously takes practical steps to deliver this excellent service experience. “We understand that success stems from customer satisfaction – and customer satisfaction is built on the success of our staff in delivering service. That’s why we invest heavily in ensuring our personnel always have the best tools for high-quality work. We keep our fleet up to date and provide regular training for our team.”
According to Markku Savolainen, Geomachine’s products are a great fit for any Nordic company operating in the geotechnical sector. “If you want an experienced and innovative manufacturer to support your business, with machines that operate efficiently and reliably in tough conditions, Geomachine is the right choice.”
Interested? Contact Geomachine!
