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David Mayer

Mayer's attorney/client files reportedly contained documentary evidence from his client, Ben Kalka, regarding Kalka's business ties with Michael Riconosciuto at R & R Research, at the laboratory facilities at Hercules, California, and Dr.

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David Mayer was an attorney from Marin County, California. He represented Calvin Robinson, who was dubbed the "drug tug" captain by local media. Mayer obtained the assistance of attorney David Mayer to represent him at his 1989 trial. However, on February 6, 1989, the night before Mayer was to appear in court to defend Robinson, he died from a gun-shot wound. His death was ruled a suicide, and a suicide tape was found.1

Mayer's attorney/client files reportedly contained documentary evidence from his client, Ben Kalka, regarding Kalka's business ties with Michael Riconosciuto at R & R Research, at the laboratory facilities at Hercules, California, and Dr. John Philip Nichols.1


  1. Seymour, Cheri. The Last Circle: Danny Casolaro’s Investigation into the Octopus and the PROMIS Software Scandal. First Edition. TrineDay, 2010.

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