37 Maintenance and repair of mining equipment, heavy equipment and parts; repair shop services, namely, repair and remanufacturing of AC and DC Electric Wheel Motors and Diesel Engine, Transmission, Hydraulic Components, Machining, Chrome Plating, Welding, and Inspection Services; heavy equipment and Mining Equipment maintenance services; rebuilding, remanufacturing, and repair services in the field of electric drive systems, engines, transmissions, hydraulic components, wheel motors; mining equipment rentals; heavy equipment rentals; rental and leasing of heavy equipment, namely, mining and earth moving equipment