"One third of junior miners are going to go away" over the next 2 years - Brent Cook interview (video)
I think the discussion is more about explorers rather than actual miners "going away", although I suppose there will be a lot of consolidation of miners as well, often without payment of a premium.
http://www.youtube.com/watch?v=fs_pqqlgCPA&noredirect=1
loki