Do you need your dangerous goods certification? Learn where you can find IATA (hazmat air), IMDG (hazmat ocean) and 49CFR (US hazmat law) training online. Becuase hazardous materials shipping carries personal liability it's important to find the best training possible. Shippers must know what they are doing because if something goes wrong the US government can and does pursue individual employees. Here's how to find the best hazardous materials training online.