About Recon


Recon Wall Systems was formed in 2000 by a group of six Twin Cities individuals that had a vision of capturing “returned concrete” (thus the name “ReCon”) from ready-mix trucks to make a large retaining wall block. Five of the founders had a “construction” background, including expertise in the concrete finishing business and in the hardscape construction business.

It did not take long for the marketplace to provide to Recon two very important messages. First, the marketplace embraced the concept of a large retaining wall block that could be machine set, that could be utilized to build tall gravity walls, and that had a natural stone texture. Second, the use of returned concrete created a perception of lower or inconsistent quality concrete. Thus, in early 2002 Recon made a course correction and began working directly with precast concrete companies to manufacture Recon with a high-quality mix design.

With the help of Recon’s licensed producers, Recon has built an international “big block” retaining wall company. We currently have 50 producers in eight countries. More than 3.5 million sq. ft. of Recon retaining walls have been built around the world.

Our Staff


Michael Klotthor, PE, President  – joined the Recon team in 2015 with over 10 years of experience as a professional structural engineer designing and assessing buildings, structures, and retaining walls. Prior to joining Recon, Mike worked for a structural engineering consulting firm as well as with CSG, a firm that specializes in the design of retaining walls and earth retention systems. mike@reconwalls.com
Bill Henzler, Operations Manager/Licensee Support  – joined the ReCon team in 2013 with 8 years in the retaining wall industry. Bill has hands-on experience installing Recon blocks which gives him an added advantage in helping our Licensees work through unique wall installations. bill@reconwalls.com
Big Block Retaining Walls - Sales Director, Erik Nelson

Erik Nelson, AIA, RIBA, MNAL, Director of Licensee Services – joined the Recon team in 2006 with 25 years in the retaining wall industry. Erik is an architect and brings that unique perspective to Recon and its product development activities. Erik is a member of the American Institute of Architects, the Royal Institute of British Architects, and the National Association of Norwegian Architects. erik@reconwalls.com