Ditch Witch is an American brand of underground construction equipment built by The Charles Machine Works, Inc., which has been in operation under the current name since 1949. The company is based in Perry, Oklahoma.Ditch Witch machines started in the 1940s when a compact trenching machine was created to replace the pick and shovel for installation of some residential services.The Ditch Witch organization specializes in the design and manufacture of underground construction equipment.