Asphalt Related:
The Asphalt Institute
National Center for Asphalt Technology

Glassware Related:
GlassOnline

Chemical Industry Related:
American Chemical Society
The Chemical Industry Home Page

Plastics Industry Related:
Society of the Plastics Industry (SPI)
Plastics Resource (American Plastics Council)
Society of Plastics Engineers
Injection Molding Magazine Online
Modern Plastics
Plastics Technology Magazine
Plastics Network
Polymers DotCom
Plastics Information Net (PI-Net)

Government Related:
Environmental Protection Agency
EnviroSense (EPA)
Department of Energy
Department of Transportation
Occupational Safety and Health Administration
Consumer Product Safety Commission

Technical Resources:
ANSI (American National Standards Institute)
ASTM
ASMENET