It was recently reported Locomotive 500 was delivered to work this branch line in 1964. What traffic was seen on this branch please and when did it close?
The Radium Hill branch was definitely converted to SG during the construction of the standard gauge main line. ARHS "Australian Railway Routes" says the branch was SG from 16 Dec 1964, the lifting of the line being completed on 9 Aug 66. A note says "Route was re-opened to obtain ballast for the new SG line then being built".I shall reset my knowledge bank (brain) and enter that info.
The comrails web site http://www.comrails.com/sar_locos/r_500.html says, regarding loco 500:
1.6.1964 Entered service as broad gauge 500 class diesel locomotive No.500
20.11.1964 Transferred to standard gauge and worked construction trains on Radium Hill line.
29.6.1966 Transferred back to broad gauge.