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John Cunningham

Executive Director

John Cunningham

John Cunningham joined the Aggregate and Ready Mix Association of Minnesota as its Executive Director in July of 2018. John manages the association’s educational, promotional, and advocacy efforts on behalf of the State’s concrete and aggregate industry. He has over 30 years of experience in the transportation and infrastructure industry with focus on technology transfer, advocacy, and promotion. Mr. Cunningham’s background includes positions with a private consulting firm, industry associations, and a state department of transportation. He is the recipient of several state and national awards. John and his wife of over 25 years reside on their farm near Cannon Falls.


Director of Engineering, Research, and Technology Transfer

Glenn Engstrom, PE

Glenn joined ARM in November 2022.  Previously he served as Director of MnDOT’s  Office of Materials and Road Research.  This position provided overall leadership and administrative guidance to the 125 employees of the Office of Materials & Road Research which provides technical expertise in the areas of materials testing, pavement management, geotechnical engineering and pavement research to MnDOT, counties and cities.

At MnDOT over the last 30 years he served as the Chief Geotechnical Engineer, Assistant District Engineer, Maintenance, Manager, Minnesota Road Research Section.

He also worked for the FHWA and US Army Corps of Engineers and is a graduate of the University of Minnesota.

He lives in North Oaks, Minnesota with his wife Lori.  He enjoys wood working, collecting Schwinn Stingrays, Lionel toy trains, and vintage Tonka Trucks.

Headshot Jhenyffer

Engineering and Technology Coordinator

Jhenyffer Asp, PhD

Jhenyffer Asp oversees ARM's certification program, along with serving as an advisor on construction materials. Thousands of technicians, designers, engineers, and architects go through technical certification sessions provided by ARM each year. Along with scheduling and logistics, Ms. Asp coordinates the human resourcing, equipment, and materials necessary for the program’s continued success. As an advisor to the engineering and architectural communities, Jhenyffer is an integral part of ARM’s role as a reliable resource for concrete and aggregate information.

Ms. Asp came to ARM from MnDOT’s Office of Materials and Road Research, where she was intricately involved in the office’s development of its Pavement Investment Evaluator (PIE). In her position with MnDOT, Ms. Asp’s work dealt with the analysis of data from the agency’s Pavement Management System, along with development of pavement performance prediction curves based on that data.

Prior to her work with MnDOT, Ms. Asp earned her PhD while working as a research assistant and, as a teaching assistant, in Civil Engineering at the University of Minnesota. Her experience as a teaching assistant included instruction on properties of construction materials, including aggregates and concrete. Jhenyffer worked directly with students providing instruction on concrete mixtures, performance of concrete and aggregates, and on materials test procedures commonly used in the field and in the laboratory.

Jhenyffer is originally from Brazil and now resides in Minneapolis with her husband, Mark.


Lobbyist and Government Relations Advisor

Marty Seifert, Flaherty & Hood

Marty Seifert has acted as ARM’s lobbyist and government relations advisor since 2015. Marty served in the Minnesota House of Representatives from 1997 to 2011 and ran for Governor in 2010 and 2014.  He served as the Minority Leader in the House of Representatives from 2006 to 2009. Marty’s work ethic and common-sense approach are a product of his youth spent in a southwest Minnesota farming community. He is an accomplished author, educator, and businessman. Marty and his wife, Traci, have two children and reside in Marshall, Minnesota.

Jill Cohen

Office Manager

Jill Cohen

Jill was raised in Minneapolis and attended the University of North Dakota in Grand Forks where she was awarded a B.B.A in Airport Administration and Management. Jill has been employed by ARM since December 2004. Before joining ARM, she worked in the airline and medical device industries. She and her husband have two daughters and reside in Burnsville.

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