George Thompson began operations in Owatonna, Minnesota as a systems installation contractor. In 1930, the company relocated to Minneapolis, Minnesota and began to manufacture lightning protection system components. John Thompson took over management of the company in the 1940’s and built operations to a national scale that has since expanded to an international scope under subsequent ownership by Robert W. Lindquist and Allan P. Steffes.
Thompson’s goal has been and always will be to provide only the highest quality lightning protection system components available anywhere. This commitment to quality is also reflected in our engineering and customer service operations where no short cuts are taken and long term customer satisfaction is of paramount importance.
All Thompson products are inspected and listed by Underwriter’s Laboratories and are in full compliance with Lightning Protection Institute and National Fire Protection Association criteria. Our UL listing is jointly approved for compliance with Canadian CSA Standards. Our top management has well over 100 years of combined industry experience and all design and field personnel are fully certified by the Lightning Protection Institute.
The “Blitz-Alert” lightning warning system.
Aircraft and static grounding systems for sensitive/hazardous area.
Mast/overhead shield line lightning protection.
Solid copper and copperclad wire ground mats/mesh in several sizes and configurations.
Solid stainless steel and solid pure copper ground rods.
R.F. shielding equipment and systems.
“Flangeguard” arrester for insulated joint underground piping and a wide range of surge and transient protection devices for any application or system.
PVC ground access/test wells with steel covers.
Thompson offers free estimates on all projects. Our Engineering/Drafting Department will assist in the design and layout of systems on any type of structure. We also design custom components for unique Lightning Protection or Static Grounding applications. You are invited to submit sketches and data for your specific requirements. For complete design/quote service, please send roof plan with mechanical equipment shown, first floor plan, exterior building elevations and roof edge wall sections. To further assist you, Thompson has a worldwide network of local agents, distributors and dealers. Contact our factory for the name of the representative nearest you.