My name is Dave and I have been employed in the precious metals refining industry for a number of years.Large scale refining allows for equipment and a scale of operation that would be impossible for most hobbyists or at-home refiners to consider. Nevertheless, I continue to be amazed by the depth of knowledge and expertise of so many of the members on this forum. I hope the members appreciate what a valuable resource you have here. I have read posts that sometimes asks what the "big refiners" do and I can honestly say that in most cases, the ideas and discussions found on this board are more advanced than the tried and true methods of most refineries. I am neither an expert or a chemist, but I have likely learned as much from this forum as I have from work. Keep up the great work!