"I think they have hit this deposit with every concevable geophysical instrument conceived by mankind. Their downhole pulse didn't indicate a wopper down there that they missed. But I guess I must concede to the possibility of picking up a massive sulphide type anomaly close to the MOHO"

You "think" but in actual fact you are not privy to the results of their findings, nor are we at this point. Therefore your comments are assertions based on what you perhaps believe to be true, not on fact. You should make this clear in your commentaries.