MDU Resources Group, Inc.

Bismarck, ND 58503

Contact

1200 W. Century Ave.

Bismarck, ND 58503

https://www.mdu.com/home

Phone:866-760-4852

More info on MDU Resources Group, Inc.

MDU Resources Group, Inc., a member of the S&P MidCap 400 index and the S&P High-Yield Dividend Aristocrats index, is Building a Strong America® by providing essential products and services through its regulated energy delivery and construction materials and services businesses. For more information about MDU Resources, see the company's website at www.mdu.com or contact the Investor Relations Department at [email protected].

Blue Planet’s limestone-coated light weight aggregate specified in Interim Boarding Area B at San Francisco International Airport was included in concrete poured in 2016 by Central Concrete. Testing showed that it met all necessary specifications.

Investment to Create Synthetic Limestone Aggregate

Using sequestered carbon dioxide, Blue Planet Systems Corp. is developing a construction-grade rock, and ultimately concrete, that would have net-zero or net-negative carbon footprint.

MDU Resources Donates $500,000 to Support Pandemic Response Efforts

MDU Resources Group recently announced that it is donating $500,000 to a variety of organizations to support coronavirus relief efforts.

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