Grain Bin Dangers A. Never enter a storage bin while unloading grain because flowing grain can pull you in and bury you within seconds; B. Grain kernels may stick together, forming a crust or bridge that isn’t strong enough to support a person’s weight after the grain below it is removed; C. Don’t try to break a grain bridge or blockage loose from inside the bin; D. Try to break up a vertical wall of grain from the top of the bin, not the bottom, because the grain can collapse and bury you. (Graphics courtesy of MidWest Plan Service, Iowa State University)