i find this of interest in light of the fact that we are constantly being told that substances we are systemically exposed to or sold are of no danger to us. Asbestos, PCB's, Dioxin, DDT, Tobacco, Fluoride, Depleted Uranium, and this film is how women in the early part of the 20th century were told that the radium they were paid to paint numbers of the faces of watches and clocks were of no danger. hope you find it interesting as well.