Parachutes

Made of strong, tough nylon, yet light enough to enable one man to handle.
Ideal for covering Grain Piles. Kids games, survival, car covers, Shade for Burning Man (You know what I'm taking about!) Hold on tight....
Here's a Link to North Dakota University for Temporary Outdoor Storage for Grain.
http://www.ag.ndsu.edu/pubs/ageng/grainsto/ae84-2.htm#Outside