I do remember hearing something along those lines of losing a...

I do remember hearing something along those lines of losing a lot of solution out of the tanks ...on the mill operators grapevine quite a while ago , might be the same story Robbo ...it was a very costly bit of a laff from memory ....its a matter of remembering the right way to turn the tap for OFF and not DRAIN. From my experience ...its always a good idea to leave the barren Quartz where it is and mine the good stuff ......just an observation from an old miner !!!! very best regards to all on sharemarket endevours