In Weipa, in North-Western Queensland, they mine bauxite (hope that's spelt correctly), which somehow eventually becomes Aluminium. The raw bauxite is conveyored from the trucks, through a huge system of conveyor belts, to this thing, which transfers the bauxite onto huge mounds. I thought the colour was amazing, and just loved the way the individual pieces were visible in the line of stuff being poured onto the mound.