Early in 1963 the Commonwealth Government announced approval of the 
 conversion of the Port Pirie to Cockburn railway line from 3' 6" gauge 
 to 4' 8" gauge, and the conversion of the Terowie to Peterborough line
 from 3' 6" to 5' 3" gauge. The project was part of the 1949 Standard-
 ization Agreement between the Commonwealth and South Australia, and
 preliminary work was started immediately after the announcement.
    Work on the Peterborough yards and buildings began in December 1967 
 an additional 100 acres being acquired for marshalling yards and transfer
 facilities at the eastern end. A 1,200 feet long passenger platform was
 built to accommodate the Indian Pacific train, with refreshment and waiting
 rooms. Other buildings included a two-storey administration block, signal
 control cabin,barracks and other amenities. The old railway station 
 disappeared and the subway was lengthened and altered to provide access 
 to the new platform and buildings. At the western end new maintenance and
 repair shops were built. Total cost of the work was $2,500,000.
    A large crowd gathered at the Peterborough Railway Station on Monday 
 12 January 1970 at 5.45pm to greet the arrival of the first standard gauge
 railway trains from Port Pirie and Broken Hill and the first broad gauge 
 train from Adelaide. The South Australian Railways Commissioner entertained 
 afterwards at a Smorgasbord Dinner in the Peterborough Town Hall.
                The Folowing was added by R.V.Stirling
    All of this structure still exists today , though in a closed state
 and Trashed by Vandals, whom still carry on there dirty work to this
 day, The existing platform is still on the main East /West line and
 still used by passengers to catch the Indian Pacific, Though the operators
 of this train " Great Southern Railways " refuses to mantain the Station
 Toilets or Waiting Rooms which are all unusable by the passengers.
	Extract from  "Petersburg to Peterborough" by  Anita Woods