RE: Cliffs - Biodude...I like the prospects and from what I understand, CLF would be foolish not to make an opportunistic move when the timing is ripe (hence the poison pill?). This would tidy things up nicely.
However, how much does CLF really "need" the property? And what price would they be willing to pay? If they can't get it for cheap, will they do without? They already have a boat load of Chromite from Big Pappa, so a move on PRB would be strictly strategic and / or, a nice to have. Let's assume that they do have a plan 'B' in case they can't get their way.
That said, I think DP has to tread carefully here. He's a smart man, and seems to have some integrity...so I hope he can play things out in a reasonable and rational fashion for all stakeholders at play.
All my opinion of course.