This database is not downloadable but can be searched by company name. TRI contains information on toxic releases by companies. OSHA once fought the Dayton Daily News like hell to not turn over their inspections database. Now they've offered the complete database for free on the Internet with enough search fields to make it worth while. Includes data since 1973.
Site is pretty clunky but it has a few neat features.
A really useful site. Fast, efficient and very helpful. Looks like they'll have some additional accident data in the near future as well. I use the FAA and NTSB safety databases before I use the databases on this site. Nice search engine for finding enrollment and other facts about any public school in the U.S .