Charles Machine Works, The Underground Authority

The Charles Machine Works’ Family of Companies offers on-the-job solutions in all areas of underground construction. More importantly, the people of Charles Machine Works offer a unique perspective — a shared commitment to applying industry knowledge to solve today’s infrastructure challenges.

As the Underground Authority, the company brings together the world’s most knowledgeable underground construction professionals, delivering expertise, insight, and market-leading solutions to build a stronger, more stable future.

Charles Machine Works represents the best of both worlds: a strong company anchored with deep roots and a workforce equipped for the future.

Established in 1902, Charles Machine Works, an employee-owned company based in Perry, Oklahoma, is the only manufacturer and global distributor dedicated to making underground utility construction profitable. Its family of companies includes Ditch Witch®, Subsite® Electronics, DW/TXS, HammerHead®, Radius® HDD, American Augers®, Trencor, and MTI® Equipment.