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The film's working title was Blood Money. The following written statement appears before the onscreen credits: "Because of the disclosures made in this film, powerful underworld interests tried to halt production with threats of violence and reprisal. It was only through the armed protection provided by members of the Police Department in the locales where the picture was filmed that this story was able to reach the screen. To these men, and to the U.S. Rangers at Boulder Dam, we are deeply grateful." The film ends with the following written statement: "The cooperation of the United States Department of the Interior, Bureau of Reclamation is gratefully acknowledged."
Although the New York Times review mentions that Wisconsin's Senator Alexander Wiley, a member of the Senate Committee on Crime, appears onscreen to endorse the film, he was not seen in the viewed print. According to a June 15, 1950 Los Angeles Times article, producer Frank Seltzer told a special Senate Crime Investigating Committee, which was conducting hearings on organized crime, that his film crew was pressured by Las Vegas gamblers to halt filming at Hoover Dam (which was formerly called Boulder Dam), Lake Mead, Palm Springs, Las Vegas and at a "prominent Los Angeles restaurant," because they were displeased by the film's depiction of the "complicated system of 'past posting.'" Seltzer claimed that he spent $77,000 constructing stage reproductions of location sites at which he was unable to shoot and that five members of the Los Angeles police gangster squad were assigned to his company. On June 18, 1950, Los Angeles Times reported that the Las Vegas Chamber of Commerce denied Seltzer's charges and responded that "The chamber urged him to revise [the script] to eliminate the falsehoods and fantasy on which it was based." According to a June 12, 1950 Hollywood Reporter news item, 711 Ocean Drive was chosen by managers of the seven television stations in Southern California to test the effectiveness of television advertising, as part of a joint experiment with Columbia Pictures.