Question: What class was 6029,a four-cylinder, simple, non-condensing, coal-fired superheated, 4-8-4+4-8-4 heavy goods steam locomotives built by Beyer, Peacock and Company for the New South Wales Government Railways in Australia, used in?
Context: Hunter Valley Mining Locomotives (Australia) included the South Maitland Railways 10 Class which were ordered by SMR and built by Beyer Peacock.  Beyer Peacock suggested a tank engine as it would be ready earlier and could go fast backwards as opposed to a tender engine which could not.  They arrived between 1912 and 1925 with a total of 14 engines produced.  These served alongside Richmond Vale Railway's ROD 2-8-0s and Kitsons, and New South Wales Government Railways locomotives.  Also made by Beyer Peacock was the SMR 15 class which was a copy of the NSWGR 30 Class.  Numbers 15 and 16 were built in 1912 and No 29 in 1923.  These were initially used for passenger services but when that stopped they pulled coal for the rest of their lives.  All were scrapped in late 1973.  The Kitson locomotives were known on the Richmond Vale Railway as the 9-11 Class.  Locomotives 9,10 and 11 were tank locomotives and had the appearance of a side tank version of an ROD 2-8-0.  Numbers 9 and 10 ended their careers on the RVR's Hexham washery shunt and the short trip to Stockrington Colliery.  No 9 was originally called "Pelaw Main" and 10 was called "Richmond Main".  No 11 was called "Hexham".  The ROD (British Railway Operating Division) 2-8-0 Locomotives mentioned above were purchased by J&A Brown for Coal Haulage on their Richmond Vale Railway, 13 ROD Locomotives were purchased in all, three remain. The C30 class (formerly S.636) was a class of steam locomotives built by Beyer, Peacock and Company and Eveleigh Railway Workshops for the New South Wales Government Railways of Australia. The AD60 class were Beyer-Garratt patent articulated four-cylinder, simple, non-condensing, coal-fired superheated, 4-8-4+4-8-4 heavy goods steam locomotives built by Beyer, Peacock and Company for the New South Wales Government Railways in Australia. Locomotive 3112 is a two-cylinder, simple, non-condensing, saturated, coal-fired ‘Baltic’ type, 4-6-4 steam C30 class tank locomotive for the New South Wales Government Railways built in 1914 by Beyer, Peacock and Company. The EAR 58 class was a class of gauge 4-8-4+4-8-4 Garratt-type articulated steam locomotives built by Beyer, Peacock & Co. in Manchester, England, in 1949. The KUR EC5 class was a class of gauge 4-8-4+4-8-4 Garratt-type articulated steam locomotives built during the latter stages of World War II by Beyer, Peacock & Co. in Gorton, Manchester, England, for the War Department of the United Kingdom.  The two members of the class entered service on the Kenya-Uganda Railway (KUR) in 1945.  They were part of a batch of 20 locomotives, the rest of which were sent to either India or Burma. 6029 is a four-cylinder, simple, non-condensing, superheated, articulated 4-8-4+4-8-4 steam engine, of the AD60 class, built by Beyer, Peacock and Company, Manchester, England, for the New South Wales Government Railways.  It was restored to operational condition in 2014. Locomotive 3642 is two-cylinder, simple, non-condensing, coal-fired superheated, 4-6-0 36 class express passenger steam locomotive built for the New South Wales Government Railways in 1926 by Clyde Engineering. The New South Wales C36 class was a class of two-cylinder, simple, non-condensing, coal-fired superheated, 4-6-0 express passenger steam locomotives built by Eveleigh Railway Workshops and Clyde Engineering for the New South Wales Government Railways in Australia. The Z25 class (formerly B.205 class) was a class of 2-6-0 wheel arrangement steam locomotives built by Beyer, Peacock & Co. for the New South Wales Government Railways of Australia.
Answer: The AD60 class