Established in 1902, Charles Machine Works, an employee-owned company founded in Perry, Oklahoma, is the only manufacturer and global distributor that solely exists to make underground utility construction profitable. Our family of companies include Ditch Witch®, Subsite® Electronics, DW/TXS, HammerHead®, Radius® HDD Tools, American Augers®, Trencor® and MTI® Equipment. Underground Construction Equipment, Directional Drills, Trenchers, Vibratory Plows, Pneumatic Piercing Tools, Auger Boring Machines, Electronic Guidance and Locating Tools, Used HDD Equipment