Jimmy Hoffa a result of Hoffa's work with other union leaders to consolidate local union trucker groups into regional sections, and then into a national body — work that Hoffa ultimately completed over a period of two decades — membership grew to 170,000 members by 1936. Three years later, there were 420,000. The number grew steadily during World War II and through the post-war boom to top a million members by 1951. The Teamsters organized truck drivers and warehousemen, first throughout the Midwest, then nationwide. Hoffa played a major role in the union's skillful use of "quickie strikes", secondary boycotts, and other
Jimmy Hoffa 1975. Police and Hoffa's family had long believed O'Brien played a role in Hoffa's disappearance. O'Brien, however, had previously denied ever being involved in Hoffa's disappearance or that Hoffa had ever been a passenger in his car. In a first-season episode of the Discovery Channel show "MythBusters", titled "The Hunt for Hoffa", the locations in Giants Stadium where Hoffa was rumored to be buried were scanned with a ground penetrating radar to see if any disturbances were present that would indicate a human body had been buried there. They found no trace of any human remains. No human remains were