README.txt for niosh_pocket_guide.html This is a page of links to the NIOSH index of substances in their "Pocket Guide". Each link retrieves the NIOSH Pocket Guide page for that substance. The currency of the information is noted towards the end of the linked page. It is quite useful because each page contains many other links including to the USA government Centers for Disease Control (CDC) Registry of Toxic Effects of Chemical Substances (RTECS). WE PARTICULARLY APPLAUD THE US GOVERNMENT for collating and displaying in RTECS the occupational exposure limits published by a number of other countries in order to provide more helpful information on regulatory harmonisation.