4301 N Cliff Ave
Sioux Falls, SD 57104



Seth Provost
Adam Davis
Gerad VanLeur
Erik Matzen
Logan Donelan
DJ Deknikker
Griffan Callahan

DMI traces its roots back to the J.L. Healy Construction Company, which incorporated in South Dakota in 1932. For 57 years, the company concentrated on highway construction and utility work within the Midwest. In 1982, Pat Healy, J.L’s son and the company’s CEO, formed the equipment distributorship that is now known as Diesel Machinery, Inc. (DMI). The construction company was sold in 1989 as development of the equipment distributorship advanced.

Dan Healy, Pat’s son, now directs the operations of DMI as president. Dan started with the company in 1989 and has held various positions of increasing responsibility. With the help of Dan Rude, general manager, and many other long-term employees, DMI continues to stay focused on achieving its mission.

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