1974.0074 NORTH BROKEN HILL BUSINESS PAPERS [1947-1973] Creator(s): North Broken Hill Ltd. [-] Correspondence and subject files 1964-1970 (includes private correspondence series of J. Chester Guest, director and deputy chairman 1947-1970; production and technical reports 1964-1973; printed material 1964-1970. Please request using reference number 1966.0013 Business, organisations