Material Safety Data Sheets (MSDS)
   https://www2.fishersci.com/chemical/info/msdsinfo.jsp
   http://msds.pdc.cornell.edu
   http://www.msdsonline.com

DOT's office of Hazardous Material Safety
   http://hazmat.dot.gov

US DOT Transportation Safety Institute
   http://www.tsi.dot.gov

National Hazardous Material Route Registry
   http://hazmat.fmcsa.dot.gov

Federal Motor Carrier Safety Administration
   http://www.fmcsa.dot.gov

Environmental Protection Agency
   http://www.epa.gov

Hazardous Material Code Identification -- Charts that explain Hazardous Material Placards
   http://www.ehs.ufl.edu/HAZCOM/nfpa704.pdf

DOT Regulations for HazMat
   http://www.access.gpo.gov/nara/cfr/waisidx_99/49cfrv2_99.html

Virginia Environmental Regulations:
   www.deq.state.VA.us/waste/wastereg80.html

Environmental Protection Magazine
   http://www.eponline.com

Waste News magazine
   http://www.wastenews.com

Transport Topics magazine
   http://www.transporttopics.com