Ryan Incorporated Central has been shaping the earth since 1884. The Company started in Janesville, WI with a team of mules building railroad embankment in Southern Wisconsin and Northern Illinois. By the 1940's the Company had become a full-service grading contractor serving both the private industrial and public transportation customers, including some of the original work at what would become O'Hare Airport. During the 1970's and 1980's, Ryan expanded its'​ services to include landfill construction and waste remediation, and in the 1990's added golf course construction. Today, Ryan Incorporated Central is one of the nation's premier mass excavation and site-work contractors with expertise in residential, commercial, transportation, entertainment, energy and environmental work. This including extensive experience in power and industrial site-work, state-of-the-art municipal and industrial landfill construction and capping, and full service golf course construction. The Company's project size ranges in dollar value from $10,000 to $100,000,000. As the Company has grown its'​ capabilities, it has also expanded geographically having successfully completed projects in over 25 states. The company now has offices in Elgin, Illinois and Hagerstown, Maryland, and a permanent presence throughout the Midwest and Mid-Atlantic regions. Despite the growth, the entire organization's commitment to safety, excellent work, customer service, and professional integrity remains unchanged.

Helm, a privately owned company, consistently delivers a full range of construction-related services in select U.S. markets. Primary markets served are the Midwestern United States with select projects throughout the US. Corporate offices are located in Freeport, Illinois, with support locations throughout Northern Illinois, Wisconsin, and Nebraska. Construction services include mechanical, civil, plumbing, electrical, paving, and engineering services. Our service team covers many locations across the Midwestern United States.

With over a Century of ownership of family owned businesses, A C Johnston Ltd. is proud to call Rockford the home of our family office.

Sjostrom & Sons specializes in general contracting, construction management, design/build and specialty construction services for both new construction and renovations of all types: buildings, highways, bridges, sitework and other civil projects. Nearly 100 years of experience, skilled manpower, deep resources, and a reputation for excellence and integrity all come together to make Sjostrom the clear choice for any construction venture.

Jim Schroeder Construction Inc is a construction company based out of 500 S 2nd St, Bellevue, Iowa, United States.

Founded in 1954, R.S. Hughes Co., Inc. is a dynamic, North American distributor of industrial supplies. With 46 warehouse sites in the United States and Mexico , we maintain an extensive inventory of adhesives, abrasives, electrical, static control, tapes, labeling and safety products. We are proud to represent products from leading manufacturing companies including 3M, Henkel Loctite, General Electric, Brady, Kimberly Clark, Ansell Edmont, and many others. We specialize in sales and service solutions to manufacturing companies in both OEM and MRO applications.

SELCO is a leading manufacturer of protection relays, alarm monitoring and engine & generator control products that are used in marine, offshore and industrial applications. SELCO is headquartered in Roskilde, Denmark. Since its founding in 1984, SELCO has been a pioneer and leader in the development of extremely reliable electrical products for harsh industries like marine and offshore, and has earned a reputation for high quality and value. High focus and commitment to providing customers with products that improve their Total Cost of Ownership is in our DNA. We provide products, solutions and support within the following areas: • Power Generation, Control and Protection • Power Management Systems • Process Alarm Monitoring • Engine Control, Monitoring and Protection • Protection & Control relays To learn more about the SELCO line of generator protection & control units, engine control & monitoring solutions, alarm and annunciator panels visit www.selco.com

LOUIE'S TRENCHING SERVICE, INC is a construction company based out of 9720 HWY 20 W, Galena, Illinois, United States.

Founded in 1993, Citadel Environmental Services, Inc. provides comprehensive environmental, health, safety, and sustainability consulting solutions to meet the needs of both the public and private sectors. Our team of experts integrates a thorough knowledge of the built environment with the fields of architecture, industrial hygiene, safety, construction, geology, sustainability, and environmental sciences. Citadel offers an extensive line of services applicable to the various “stages” of property development, ownership, and operations: from due diligence, to finance/acquisition, through design and construction, to facility operation and personnel management, and again through property disposition. Our industry experts can augment your staff during any stage of the lifecycle through our staff outsourcing program, whereby our staff becomes an extension of your staff – seamlessly and cost effectively. We also provide litigation support as well as expert-witness services, for both plaintiffs and defendants. Our abilities to thoroughly assess our clients’ environmental health, safety, and sustainability challenges, and resolve them in the most expedient manner, strengthen the value and resiliency of their real estate portfolios and core operations. We welcome the chance to show you why the world’s most prominent companies and public entities place their continued trust in Citadel Environmental Services, Inc.