On Thu, 11 Aug 2011 00:04:58 -0700, pyotr filipivich
wrote:

"Pete C." on Wed, 10 Aug 2011 22:28:36 -0500
typed in rec.crafts.metalworking the following:

Both passenger and Haz-mat require background checks, and fingerprints.
If you do one you may as well do both. Gives you the option of buses and
such if you want a part time job.

No! No passengers! runs screaming Give me a nice big vacuum truck and
let me clean sewers...

Passengers ... Haz-Mat. Haz-mat, passengers. One loads itself,
the other is easier to handle....

There's very little difference, as both are caustic.
Haz-Mat is much quieter, though.

--
Fear not those who argue but those who dodge.
-- Marie Ebner von Eschenbach