I'm in the US; so I assume they will extend the tender period, I don't see how they can't. I almost always hold in these situations, or possibly just sell on the market. But I can't imagine if every poster here did not tender, that would be enough to force CLF to up the ante. No harm in trying, but just can't see it.
KWG - likely lack the firepower to counter with something that sounds as good as .19. Don't forget, this stock was under 5 cents as recently as last fall, and around 7 or 8 cents when the takeover stuff started. That's the equivalent of an eight dollar stock getting bought out for $19, or an $80 stock for $190! Buyouts don't come much richer, although I do understand that CLF's is getting the best of this bargain.
What we have in the ground is very important, but there is a lot of other stuff that needs to happen before we see the first nickel of revenue from the ROF.
I'm not suggesting anyone tender, just suggesting people get more grounded.