At exactly 9:50 am, a siren blares out across the entire valley. The sound is as deep as a cruise ship horn. Unmistakable. It lets everyone know that they're blasting at the Erzberg ore mine. The Erzberg is the largest open-cast rock mine in Central Europe and the most important ore deposit in Central Europe. “Due to the large production volumes, which have increased by 50% in recent years, we work here for 12 months a year, 7 days a week, 24 hours a day,” explains Josef Pappenreiter, Managing Director of VA Erzberg GmbH. “On average, we have to keep about 40 km of road clear every day for our work. This means that in the summer, the paths have to be irrigated because of the drought and buildup of dust. In the winter we need to plough snow and spread salt. That's why it is critical for the productivity of our mining industry to have the right equipment to maintain the road."