The Rolling Wedge Cutter from Philippi-Hagenbuch offers a material-cutting approach that could dramatically improve material trenching and mining processes while improving cut size and reducing cutting dust by as much as 50 percent. It is a solution for trenching and mining through challenging environments for general construction, road construction, mining and utility applications. It can be used in above-ground and underground environments, and 60 to 70 percent less energy is required to roll material out in tension. It adapts easily to many makes and models of trenchers and mining equipment, is constructed out of hardened steel and is available in various sizes, from 0.75- to 9-inch diameters. It can be outfitted with a host of optional tips. The width of the trench dictates the total number of cutters required. 800/447-6464; www.philsystems.com