One possibility is that the recent sales are from Index Funds who have a 6 month window to sell off stocks that fall out of the index.
I expect that the big share price dip a few months ago reflected decisions by US based Index funds to bail out as soon as BKN was kicked out of the S&P Indexes.
How close are they at 88 cents to coming back into the S&P?
BKN Price at posting:
90.0¢ Sentiment: Buy Disclosure: Held