A mailbox is submerged by floodwaters on a street in Depot Hill in Rockhampton, Queensland, January 5, 2011. Australia's record floods are causing catastrophic damage to infrastructure in the state of Queensland and have forced 75 percent of its coal mines, which fuel Asia's steel mills, to grind to a halt, Queensland's premier said on Wednesday. REUTERS/Daniel Munoz (AUSTRALIA - Tags: DISASTER ENVIRONMENT)