Environmental/Testing
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2220 Hawkeye Dr
Sioux City,
IA
51105-2048
(712) 252-2766
Knife River Sioux City is a trusted regional leader in construction materials and services, delivering high-quality aggregates, asphalt, and ready-mix concrete across Iowa, Nebraska, and South Dakota.
600 Stevens Port Drive, Suite 102
Dakota Dunes,
SD
57049
(712) 222-1452
