https://earthquaketrack.com/us-ok-perry/recent

https://en.m.wikipedia.org/wiki/Perry,_Oklahoma

https://en.m.wikipedia.org/wiki/Ditch_Witch

Ditch Witch, a trade name of Charles Machine Works, is an American brand of underground utility construction equipment, which has been in operation since 1949. It is the leading subsidiary of Charles Machine Works, headquartered in Perry, Oklahoma. Charles Machine Works is itself a subsidiary of Toro Company, the latter acquiring them in 2019.

Innovation of Ditch Witch machines started in the 1940s when a compact trenching machine was created to replace the pick and shovel for installation of underground residential utility services.

The Ditch Witch organization specializes in the design and manufacture of underground construction equipment. The company is a source for trenchers, vibratory plows, horizontal directional drilling systems, drill pipe, downhole tools, vacuum excavation systems, fluid management systems, and mini skid steers. Because of its extensive experience in construction of subterranean structures and systems, CMW and Ditch Witch have been called, "The Underground Authority."