Huddy's Baralaba work should hopefully be ok! I'll do more digging to see about the other mines that they operate at.
"A QR National spokesman said more tonnage was reaching Gladstone port on its Moura line, which services Anglo-American's Callide and Dawson mines as well as Cockatoo Coal's Baralaba operation"
http://www.theage.com.au/business/flood-damage-grows-for-coal-industry-20110106-19haw.html