Construction work has been in progress at the vast ski arena of Corviglia – Piz Nair – Marguns since 2015. A reservoir for the snowmaking machines was constructed in the summer months up to 2017 using the balanced earthwork principle of cutting and filling. Last September another 5,000 m³ of different aggregate sizes was then required for frost protection in road building. The development of infrastructure at a height of 2,650 m above sea level poses a challenge. To avoid having the stone aggregate delivered from down in the valley with countless lorry runs, the mountain railway company decided to use the RM 90GO! mobile impact crusher. As a result, guests in summer are not disturbed by lorry transport. Additionally, the reduction in lorry trips had a positive impact on the dirt roads and the environment as there were no unnecessary transport emissions.

Top performance even when the air is thin
The Bündner granite was processed by the RM 90GO! at a mobile crushing site at 2,650 m. This mobile impact crusher hired from RUBBLE MASTER Schweiz AG produced around 5,000 m³ of 30-70 mm material for frost protection and fine undersize aggregate from the blocks provided up to a size of 400 mm. The mountain railway company hired the RM 90GO! for a month based on the very professional advice given by Peter Schärer of RUBBLE MASTER Schweiz AG. Thanks to the short-notice availability and the RM 90GO! being able to handle the winding mountain road up from Celerina via Marguns to the job site at 2,650 m above sea level itself without any trouble, it was possible to handle the crushing work as planned within a time frame of four weeks in September. Work had to be interrupted once due to the early onset of winter but the planned quantities were still achieved with no trouble at all. Reto Bieri praised in particular the performance of the RM 90GO! also in Alpine territory plus the professional advice and prompt service offered by RM.

Our crushers in action

RM 90GO!

High performance and profitable – these are the characteristics which best describe the RM 90GO!. Packed with versatility it transforms all mineral materials into high-quality cubic aggregate at up to 200 t/h. Thanks to its mobility it is at home in city centres as well as in the mountains.

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Weitere Einsatzberichte

Natural rock

Crushing at a high output and low wear, and that in every possible and impossible location, is not an issue for RM crushers. They manage to generate the highest quality value grain from natural stone on site. Depending on the desired combination of machinery. The end result is always cubic aggregate.

Abrasive rock

Quartz gravel, granite and riverbed gravel are not easy to process because high levels of quartz cause high wear. However, RM crushers are designed for such materials: thanks to their compact size they can achieve high throughputs even in tight spaces, producing valuable aggregate directly on site at all times.

Crushing gravel with 90% quartz content

Processing 24,000 tons of gravel with a quartz content of around 90 percent to produce 0-32 mm value grain
– that was the right challenge for the RM 100GO!. The mobile power pack with its wear-resistant hammers rose to this challenge in the Vienna basin extremely economically. Excavator and loader drivers are impressed.

Endurance in riverbed gravel

Building roads to connect to eastern Mexico was difficult because of the problematic terrain. It was necessary to prepare materials on site because of the remote locations of the construction sites. The RM 70GO! is ideal for challenges like this. Its manoeuvrability make it a perfect machine.

High demand for crushed sand and grit

The Swiss company Mühlebach AG has been successfully processing gravel for 40 years. As pioneers in this business field, they demand machines that are state of the art. They have now added an RM V550GO! to their fleet of machines in order to meet the demand for crushed sand and grit.

Impressive RM V550GO! performance in Argentina

At the beginning of the year the RM V550GO! made light work of transforming 0-200 mm river rock into fine 0-19 mm value grain. The awesome capacity and low diesel consumption were key in the Argentine company’s decision to purchase the RM V550GO!.