Lists of Schema

All,

I'm in a research for various XML schema initiatives.  In particular those
which would be applicable to the chemicals industry.  I know that most
schema are oriented toward work processes (customer data, billing
information, etc.), but even with those it's hard to find a good reference
list.

Are there any sites or references which identify schema?  Are there any
organizations (besides OASIS) which might provide information on initiatives
for define schema underway?

Thanks, especially for e-mail.

Mark Klamerus