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Connolly-Pacific Co. (CP) is a vertically integrated rock quarrying and marine construction company. CP is engaged in the business of selling rock products and providing marine construction services in Southern California, primarily from Los Angeles to San Diego.

CP, originally incorporated in 1946, has been in operations since the early 1930’s initially constructing the Los Angeles and Long Beach breakwaters for the U.S. Army Corps of Engineers.

CP is a wholly owned subsidiary of Knife River Corporation. Knife River Corporation is a wholly owned indirect subsidiary of MDU Resources Group, Inc. operating the company’s construction materials and mining operations.

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