In Watchmen, Dr. Manhattan is the only real "super" hero. He is created by Dr. Osterman being trapped inside the intrinsic field experiment. Presumably this experiment was reproducible, and if not in the original device, in Ozymandias' recreation of it that he used to dismantle Dr. Manhattan.
Obviously there are ethical implications of putting someone else into the device and the possibility that they would fail to reassemble themselves the way Osterman did, but given his immense power and the willingness of world powers to make use of Manhattan, such as in Vietnam, was it ever tried? If not, was a reason given?