A radiation case having a radiation-proof door, and having a radiation-proof main section that has a back portion, a floor portion, a ceiling portion and side portions, vertical cavities formed in the back portion, the vertical cavities being a distance from a surface of a back wall of the back portion, radiation rods located in the vertical cavities, each radiation rod containing cobalt-60 pellet, the distance between the vertical cavities and the surface of the back wall of the back portion being less than a penetration distance for gamma rays coming out of each cobalt-60 pellet.

 
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