Bruce Gentry

Bruce Gentry Daredevil of the Skies 1949 is a 15episode Columbia Pictures movie serial based on the Bruce Gentry comic strip created by Ray Bailey. It features the first cinematic appearance of a flying saucer, as the secret weapon of the villainous Recorder.

Necessary for the production of the flying saucers is a mineral called Platonite. The Recorders only source, an abandoned mine on the land belonging to Jaunita Judy Clark and Frank Farrell Ralph Hodges, has run dry and he needs to steal supplies from the US Government.When Bruce closes in on The Recorder, he finds out that his prey is actually Dr. Benson. Krendon Tristram Coffin, one of his henchmen, releases a deadly flying saucer on an attack against the Panama Canal. In his aircraft, Bruce intercepts the saucer, crashing into it, and escaping the resultant explosion by taking to his parachute. Back at The Recorders headquarters, the saucer controls explode, killing all the enemy agents. ........

Source: Wikipedia