BigPic, the existing flotation mill is still operating and producing 3 concentrates, a zinc con, lead con and gold/pyrite con and I am not aware of any reason this will change. The zinc and lead con will continue to be sold as they have been with the gold/pyrite con now reprocessed in the new mill to realize it's full value for gold. Not sure what the status of the roaster project is now which was going to roast the gold/pyrite con to release most of the gold.
This Merrill Crow circuit should be good for oxide ores, tailings and gold/pyrite con processing meaning that the company should be able to now begin processing the value sitting in these various piles plus mining new oxide ore stopes. ECU has run this mill before years ago well before all the recent exploration successes and when the gold price cratered in the late 1990's, so is very familiar with it.