Safety Welding Guides:

http://www.aws.org/w/s/technical/facts/

Bulletins:

http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=13096

http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=13116

http://www.osha.gov/Publications/OSHA_small_entity_comp.pdf

http://www.osha.gov/SLTC/hexavalentchromium/index.html

http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=13117 

Other Resources:

OSHA Website - http://www.osha.gov/

NIOSH Website - http://www.cdc.gov/niosh/

AIHA Consultants - http://www.aiha.org/Content/AccessInfo/consult/consultlisting.html

AWS Website - http://www.aws.org/w/a/