I'd never heard of this before was intrigued as to the identify of the smuggler. If, indeed, it really happened, any ideas? Soviet Union, Israel,
Mexico (!?) .... a non-governmental organization seeking to build a parallel nuclear arsenal?
In 1949, Vallarta briefly figured in an obscure incident in which agents of the Mexican Federal Security Directorate were reported to have
intercepted a significant quantity of uranium being smuggled out of the United States. The material was sent to Vallarta’s lab in Mexico City for
analysis and subsequently identified as U-235, a key component in atomic weapon construction. Reporting on the story abruptly ended two days after it
was first broke by the AP.