Please find below an important message from the UK Environmental Management Department: 

I need to remind you of a matter that is vitally important in meeting the intent and spirit of certain regulatory obligations, and in ensuring the safe transportation of dangerous goods (1) packaging originating from the University. The US Department of Transportation (DOT) has established regulations for the transport of dangerous goods by rail, air, vessel (ships), and motor carrier (ground).  Very significant financial penalties may result from any violations of DOT regulations.