Build your own line, mining railroad parts......

Could I please have your attention? Recently I was at my relatives house 20 miles outside of the town of Cootamundra, New South Wales, Australia. They own a farm and have 600 acres of property. I had a look at a Bike course they were building and discovered many old parts to a old mining train, including tracks, parts to a steam locomotive and some type of wooden cars. There are several parts, looking like they might be valuable. Including Pistons to a steam locomotive, drive shafts to a locomotive and a few wheel sets along with some track. I was wondering if anyone knew anything about this kind of stuff, and if they would reply to it or e-mail me at Firebird9801@aol.com
If you would like to see pictures, just ask and I will send them in. Someone please reply to this, I need to know soem information on this topic, Thank You.

Luke