The mistakes of the past, which result in the unfortunate legacy issues people know from historic mining areas, reflect the past lack of knowledge and understanding of the long term impacts on water of various discharges. A great many of today’s standard practices weren’t available to our predecessors; they simply didn’t have the scientific research results nor technology now available to us. This lack of knowledge and foresight also resulted in insufficient bonding amounts. Many legacy issues in Montana are related to open pit mines with much larger volumes of rock, huge waste piles and unlined tailings disposal facilities located directly in waterways. They are completely different than our Black Butte Copper Project scale.