Between 2013 and 2017, we installed several slab ice plants and chilled water plants for our customer's operations, providing a total of 1680 tons of slab ice per day. This corresponds to around 3 MW of chilled water at 3 °C. We prefabricated the plants in Germany and were thus able to reduce installation and commissioning costs enormously. A heat load of 15MW at a depth of 2,500m requires 25,000 tons of water at 5°C, but only 3,200 tons of ice. This leads to enormous savings in pumping energy, since the heated water would have to return to the surface. In 2013, our customer, a South African gold mine, approached us to expand its cooling systems. In total, this would need about 2000 tons of ice in the next few years. The ice would be produced on the surface of the mine. However, such a large cooling system requires an enormous investment. Together with other advantages associated with containerized, modular systems, we were able to help the customer take an approach that spreads the investment over several years. For example, in 2013 we delivered two plate ice plants, Ice Crusher and Ice Discharge System to the customer with a total production of 440 tons of ice per day. A short delivery time of our equipment quickly covered the need for cooling compared to only one large plant. In a second and third phase, the plant grew with the customer's cooling needs, as did the mine. We delivered more modules until the plant reached full size in 2017, with a total production capacity of 1680 tons of ice per day. Two water pre-coolers were also installed to supply water at a temperature of 5°C to the ice plants. This is economical and energy efficient.

In a Brazilian gold mine, we installed an underground ventilation system, our Underground Chiller UC 500, with a cooling capacity of up to 600 kWR. The mine urgently needed spot cooling to deepen the shaft for further exploration. Since our underground chillers are specifically designed for the adverse conditions and can be easily moved through the mine, installation and commissioning was quick. The mine now meets its safety requirements for safe working. In 2021, we were approached by our customer when an urgent need for underground cooling arose in the course of shaft deepening. In cooperation with a partner company that is a global leader in mine ventilation, we were able to develop a cooling concept on site. Our Underground Chiller was integrated into the cooling concept as it offers several advantages compared to conventional water coolers. A crucial requirement was the high corrosion potential due to the acids and minerals contained in the groundwater. Due to the special design and material selection of the heat exchangers, the Underground Chiller was able to cope with this without any problems. In addition, the service life is much longer as a result. The entire unit was lowered upright through the shaft and then simply moved underground to where it was needed. This met a second requirement and avoided the need to build special ramps. After placing and connecting the chiller to water, power and cooling car, our trained technicians successfully commissioned the chiller. Several tests were carried out and the performance record of the Underground Chiller was established to the full satisfaction of all parties involved