Management Team

Jeffrey L. Cummings

Owner and President
Mr. Cummings’ background includes more than 30 years as a business executive, industry leader, and certified public accountant. For six years, was the chief financial officer of a multi-state workers compensation insurance company, giving him valuable insight into risk management and insurance related issues. Mr. Cummings also has experience in legislative activities important to the crane and heavy haul industries.

Mr. Cummings is owner and president of Duffy Crane & Hauling, Inc., a company founded in Denver in 1886, which is an accomplished leader in heavy haul transportation, equipment installation and crane work, specializing in the movement of energy products and services. Mr. Cummings is currently the president (and a board member) of the Rocky Mountain Crane Owner’s Association, an executive board member and chair of the Colorado Motor Carriers Association, and a member of the board of directors of Pinnacol Assurance. He is also chairman of the Audit and Enterprise Risk Management Committees and a member of the Strategic Planning Committee of Pinnacol Assurance. Additionally, Mr. Cummings is engaged in other not for profit board activity and he is also a past trustee of the Western Region Ironworker’s Trust Funds. He earned his bachelor’s degrees in Business Administration and Economics from Drury University in Springfield, MO.

John Krane

Director of Crane Operations
Mr. Krane has more than 20 years of experience in the crane industry. A native of the Kansas City area, he began his career in crane manufacturing with RO Corporation (now a division of Terex Cranes).

John’s broad base of experience includes both operations management and business development management at both local and national levels. He has provided cranes and project leadership on both coasts, including several projects in the Rocky Mountains, Intermountain Region, Gulf Coast, Midwest, west Texas, North Dakota and in the southeastern United States. In 2015 he became the first in the industry to lease the 716-ton Manitowoc MLC650 conventional crawler crane.

John earned his masters of business administration from Baker University. A certified crane inspector, he has earned additional certifications in a wide range of topics in crane operations, safety and business management.

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.