Those numbers all look fine to me and would generally agree, I am not an Iron Ore expert but those Iron Ore grades all looked a bit on the low side to me, as a rough guide, have a look at the typical Hematite Ore grades from RIO & BHP for ideas about high grade, and compare with some of the few Magnetite Iron ore miners to compare with.
Most of the base metals and precious metals stuff looked about right to me.
