Mining Machines are designed to work in extreme harsh and unfriendly conditions. That requires also an adequate design in regards to the high G-Loads, clogging requirements and sometimes also specific coating requirements if these Machines are running in corrosive ambient. Some areas also require special explosion protected components and Manufacturers have to classify the equipment for use in potentially explosive atmosphere, based on the Explosion Protection Directive 94/9 EG (ATEX 95). In cooperation with the Technical Inspection Authority in Germany, we have a certain Oil-Air-Coolers Range classified.