RE:bhp or fcxBHP maybe but definatley not FCX they have there own promblems with debt right now. But BHP, VALE, and Rio Tinto, Lundin all seem like valuable candidates who could look at buying up the smaller companies. I see HBM as wanting to be like these companies one day though so i dont believe management wants to get taken over. They might sell off some of there smaller properties in gold and zinc to pay off some debt, but i dont expect them to give away the whole company.
Although i will say there Constancia mine in peru is probably pretty attractive if production holds up to its potential. You could possibly see a hostile bid from someone down the line if valuations stay this low.