Where on the net can I find lists of sub categories?

[Family_Guy]

Trying to find on the net a list of all stocks on the ASX in their respective sub/sub categories.
For eg, a list of all the natural gas stocks or Solar power stocks or cleaning companies or Train operators etc etc etc etc etc.

Cheers

 

[Trembling Hand]

This should keep you busy for a little while.

 

[Family_Guy]

Thanks TH......just what i was after.