Jack Gribble appointed by the Western Australian Department of Native Affairs as special officer at the Twelve Mile to exercise a controlling influence over strikers.

DNA Tries to Control Strikers
Acting Commissioner Lew McBeath to Acting Native Affairs Inspector Tom Jensen, 31 October 1947
Citation

Acting Commissioner Lew McBeath to Acting Native Affairs Inspector Tom Jensen, 31 October 1947, SROWA, 1947/0305/175.

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