Sturm markets Snowflex , an artificial surface for ski hills and snowboarding that will be used at the resort in the Dells .
The development group includes Dieter Sturm , who does special effects and snowmaking for movies , and Martin Greenberg , an expert in sports facility management .
Dieter Sturm markets Snowflex , an artificial surface for ski hills and snowboarding that will be used at the resort in the Dells .
The development group includes Dieter Sturm , who does special effects and snowmaking for movies , and Martin Greenberg , an expert in sports facility management .