Safe grain fumigation

The most modern, safe, environmentally friendly and economical chemical fumigation of grain in an grain elevator (silo-type grain storage facility) 

Effective chemical fumigation of grain crops in a grain elevator without moving the grain;
Fumigation of grain at specified coordinates: delivery of fumigant (gas tablets with aluminum phosphide or magnesium phosphide) to the source of the grain pest infestation, deep into the grain at a specified depth.