Certified Women-Owned Fabricated Structural Metal Manufacturing in South Dakota

The Granite Group is a South Dakota Based Business that provides the missing link, connecting American contractors with the United States government. We research and contract with the best and most capable contractors to provide services to our great country. The Granite Group is committed to ensuring a top-quality final product within the approved budget amount and in a timely manner.

With a core team of people deeply committed to our success, Tower Systems is a family-operated business headquartered in Watertown, South Dakota, with a division in Winter Park, Florida and a satellite office in Angle Inlet, Minnesota. CEO Kari L. Carlson is a second-generation owner following in the footsteps of her father Bill, who was a highly respected trailblazer in the tower industry. Even as the company grows and expands its services across the globe, the culture remains tight-knit, focused on safety, respect and quality.