Empire Underground

You won't find a better crew or leaders in the area when it comes to any curb & gutter and flatwork needs. Contact us today to discuss an upcoming project, or if you're looking for stable and rewarding employment. Brooks Katzer, the owner of Katzer Concrete, has been in the concrete and construction industry since around 2001. His goal is to become the most trusted and dependable flatwork and curb & gutter concrete contractor in the area. Now also offering asphalt repair and concrete sealing.

G&R Controls provides energy management solutions, including automatic temperature controls, fire alarm and security systems, and hydronic heating and cooling equipment. It is a subsidiary of O'Connor Group, a company specializing in supply of indoor comfort needs, such as heating, cooling and air conditioning. The company provides a variety of commercial products from Siemens and McQuay. Its other two subsidiaries include O'Connor Company and Balancing Professional Inc. Balancing Professional Inc. is independently owned and operated for third party services providing NEBB- certified testing and balancing expertise. O'Connor Company specializes in commercial heating, ventilation and air conditioning (HVAC) equipment.

T & R Contracting Inc is a contracting company based in Sioux Falls, South Dakota, dedicated to delivering quality services in the construction industry. As an Equal Opportunity Employer, they emphasize inclusivity and diversity within their workforce. The company is located on North Gulby Avenue and is committed to maintaining strong communication with both clients and potential team members. Their professional approach and strong community presence make them a notable player in the local contracting sector. Generated from the website