Contact Us

Customer Support & Sales
Office: (641) 424-5591
Fax: (641) 423-1894
Email: nisg@netconx.net
After-hours emergency: ‭(641) 430-9429‬ -Mike

Sales Manager
Mark Tuttle: (641) 590-0848

Operations Manager
Mike Graf: (641) 430-9429

Quarry (Gravel Pit) and Office
14300 300th Court, Mason City, IA 50401

Operation Hours
Monday-Friday: 8am-4pm
Saturday: By appointment
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