BUILDING PUBLIC WORKS of the LEON GROSSE group The company was created in 1945 by Mr. SIMON under the name SIMON MOEHRINGER . In 1962, it was bought by Mr. Jean-Paul BLANCK, it was then called Entreprise JP BLANCK. Mr. BLANCK sells the company in October 1987 to the company LEON GROSSE whose head office is in AIX-LES-BAINS. Home Business areas Proximity sites Exceptional sites A job with us To contact us legal information Since then, BLANCK has developed its activity in the public and private sectors throughout Alsace. Today, it has a workforce of 100 people in Alsace, with significant activity in the Haut-Rhin. The company bases its performance on the exceptional quality of its staff: managers, ETAMs, and workers, who carry out projects of all sizes, with the motto: MY PASSIONATE PROFESSION Site design and production: mullerergonomie