| nswma.org | National Solid Wastes Management Association (NSWMA) |
| iswa.org | International Solid Waste Management Association (ISWA) |
| hmac.org | Hazardous Materials Advisory Council |
| envasns.org | Environmental Industry Interactive (EII) |
| costha.com | Conference on Transportation of Hazardous Articles (COSTHA) |
| astswmo.org | Association of State and Territorial Solid Waste Management Officials (ASTSWMO) |
| worldsteel.org | International Iron and Steel Institute |
| steel.org | American Iron and Steel Institute |
| napcor.com | North American PET Plastics Organization |
| gpi.org | Glass Packaging Institute (GPI) |
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