From the Maitland Mercury report:
It has been three decades since the Cessnock City Council stepped in to stop the demolition of a power station and coal mine at what is now the site of the Richmond Vale Railway Museum. Since then hundreds of volunteers have contributed to the maintenance of locomotives, rolling stock and the site. This Sunday volunteers will be remembered. The museum will hold a 30th anniversary open day with two steam engines operating, the SMR 10-class and the small shunt engine affectionately known as Marjorie.
Full article by Nick Hansen available at Maitland Mercury, 29/09/2009.