Thanks Derek. Extremely helpful. It is good to know iron ore is easier to prove than say gold. I was trying to researach this but couldn't find anything from a reliable source so your post is helpful. Your post indicates that iron ore doesn't need to be drilled, for example, like gold to estimate the amount of the resource. Do you know why it is easier to estimate and extract iron ore and what the methods are for determining a resource before a compliant resource estimate is filed?