Management Team

Jeffrey L. Cummings, President

President and Owner of the Duffy Companies and Mountain States Industrial Contractors
The subsidiary, Duffy Crane and Hauling Inc, was originally founded in Denver, CO in 1886 and is one of the oldest companies in the State of Colorado. Duffy Crane and Hauling is an accomplished leader in Heavy-Haul Transportation, Oversized Transportation, Commercial and Industrial Custom Crane and Rigging services. Duffy specializes in the complex movement and installation of large oversized energy products and services in the Rocky Mountain West and Continental USA.

Jeffrey is an active business and community leader and is currently the President and a Board Member of the Rocky Mountain Crane Owners Association, an Executive Board Member and Chair of the Colorado Motor Carriers Associations, and a Member of the Board of Directors of Pinnacol Assurance and the Pinnacol Foundation. Jeffrey is engaged in other Nonprofit Board activities and is a past Trustee of the Western Region Ironworkers Trust Funds.

Jeffrey's background includes more than 30 years as a Business Executive, Industry Leader, and Certified Public Accountant. Jeffrey is graduate of Drury University in Springfield, Missouri, with BA in Business Administration and Economics, and a Minor in Accounting.


Dennis Rooney

Millwright Division General Manager
Dennis has over 30 years’ experience in coordinating and managing construction projects in process and product manufacturing industries. He is licensed with a general building contractor’s license for the State of Utah and also his Construction “A” license/ certificate for the City and County of Denver, Fort Collins, Aurora and Adams County. He specializes in Millwright, Rigging, and Project Engineering. Dennis has a degree in Mechanical Engineering from Iowa State University.