All three are for profit companies with motivation to scare so they can make some money.
Here are some Canadian sites that are informational only, no ulterior motives:
http://www.safetyauthority.ca/bcsa_pdf_ ... e_Home.pdf
http://www.esasafe.com/GeneralPublic/bh_003.php
http://www.esasafe.com/pdf/Flash_Notice ... -01-FL.pdf