With a length of 33 metres, 32 wheels and weighing 264 tonnes, 6029 is the largest operating locomotive in the southern hemisphere. 

The 60 class engines adopted a concept developed by H. W. Garratt, whereby the boiler and driver’s cab is in the centre of the locomotive and there are two separate sets of wheels and motion, one at each end. The front engine unit carries a water tank, and a rear engine unit carries the coal bunker and another water tank. The weight of the locomotive is thus spread over many axles. For New South Wales, this meant that these engines could haul longer and heavy trains on lightly-built country lines. 

The last steam locomotives introduced into NSW, the 60 class were manufactured by Beyer, Peacock and Co. in Manchester UK. The first of the class did not enter service until 1952. The original order for 25 locomotives was later increased to 50; but a change of mind as the advantages of diesels were recognised, meant that only 42 locomotives were delivered with a further 5 supplied unassembled, for use as spares.  

The lack of turning facilities in country areas – the 60 class needed longer turntables, or triangles – meant that by far the greatest use of these locomotives was on main lines. Even then, the few turntables on the system with the capacity to turn them, meant that they often ran in reverse.

From 1958, a number of them, including 6029, were fitted with a second set of controls to allow the driver to face the direction of travel when travelling ‘bunker first’, denoted by DC -  for dual controls - painted on the buffer beam. These locomotives also had their axle load increased to improve their tractive effort. In their main line, heavy haulage roles the 60 class were a considerable success.

They were the very last steam locomotives to run in regular operation on the NSW Government Railways; the last of the 60 class ended their service in the Newcastle area early in 1973. They had outlived the first of their successors, the 40 class diesels. 

Locomotive 6029 entered service in April 1954, and received its dual controls in February 1959. It was withdrawn in 1972 having travelled just under a million kilometres during its working life.