Western Star Trucks has announced a collaboration with J&J Truck Bodies & Trailers to build a truck for extreme-duty mining and quarry applications. The program provides customers with a new Western Star 6900 XD paired with a heavy-duty dump body from J&J. This truck is built to haul loads up to 40 U.S. tons. The 6900 XD 40-ton dump is designed to minimize cost per ton of material hauled and maximize shift productivity through efficient fuel consumption, fast cycle times and operator comfort. Key specifications include 110,000 pound planetary drive axles, a Detroit Diesel Series 60(r) engine with Tier 3 off-highway emission ratings, a fully automatic Allison 4500 RDS transmission, and purpose built dump box.