Thanks, Mr Z. That's quite helpful and informative. That means that what's inside the building is probably a self-contained mill, and the equipment outside is as you say extra equipment to increase tonnage. And since you reminded me, I checked and those photos from inside the Melba building are actually on this website- just click on photos. The black vats w/ yellow stripes you see outside now look like they might have been inside the Melba mill. Also, there's a yellow hopper and conveyor belt outside now that may also have been inside, though it's harder to tell. But most of what's inside at Melba must now be inside at Diamond Creek. That includes the ball mill, vats, separator, shaker table, etc. Your memory is certainly better than mine!

spiny

BTW, I've posted the picture of the mill site posted by bobby joe over at ihub.