Yongala was the eastern extremity of the South Australian mainline grain network, and on 14 February 1997 Australian National ALCos small and large, 847/603 prepare for the loading of a short rake of hoppers that had originated from Port Pirie..
Railing of grain from here ended a year or two later (see additional comment below), with grain from the silos being roaded to Jamestown or direct to the port. From what I can make out the silos are no longer used at all.
Locomotives in this photo
Copyright of the photo remains with the original author.