Hours:
Geotechnical Engineering &
Construction Materials Testing
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PO Box 740
1330 Michigan St
Storm Lake, IA 50588
Holiday Hours
Main Phone: (712) 213-8378
Serving locations in Iowa, Nebraska, South Dakota, and Minnesota. Click here for more details.
1330 Michigan St
Storm Lake, IA 50588
(712) 213-8378
Saturday and Sunday Hours By Appointment Only
Serving locations in Iowa, Nebraska, South Dakota, and Minnesota. Click here for more details.
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