I've put together something similar except I don't have an 'extreme' section.
Here are the differences I can see compared to my chart:
Gold: <2g/t, 2g/t - 9g/t, >10g/t
Iron: <30%, 30-40%, >40%
Uranium: <0.15%, 0.15-.40%, >40%
Platinum: <1g.t, 1g/t - 2.5g/t, >2.5g/t
Everything else seems about the same what I've got. The differences aren't too earth shattering so we'd both probably have similar reactions to the same news regarding any particular drill results.
Good to see Graphite on your list, it's the one thing I don't have.
Some extras:
Potash (K2O): <20%, 20-28%, >28%
Phosphate Rock (P2O5): <25%, 25-30%, >30%
