If you don't know what I'm talking about, read Doonesbury today (click for larger image):
Then read these:
NOTE: Confined Space is back after a short 10-year break and can now be found at: Confined Space.
WHAT IS THIS?
Workplace issues, Occupational Safety and Health (OSHA), Workplace Safety, Public Health, Environment and Political Information that everyone should know.
What happens inside the Beltway matters outside the Beltway.
That's why they try to keep it secret.