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| Knife River Corporation |
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| Aggregate Producers in America and is one of only three companies in that distinction that remains U.S.-owned and operated. Built on a foundation of more than 1.2 billion tons of aggregate reserves, Knife Rivers operating companies provide aggregate, asphalt, building materials, construction services, liquid asphalt and ready-mix concrete to public and private sector clients.
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| Knife River Corporation |
| Boise, Idaho |
| USA |
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