I watched a documentary about a copper mine and they were talking about those trucks
They can carry 300 tonnes of coal in one go!
( Donkey Gums @mattcomedy, Mon 22 Jun 2009, 11:04, archived)

They are
A-mazing. I heard JMG needs to use one to get about Newcastle.
( Jobe, Mon 22 Jun 2009, 11:09, archived)