Vanguard adds Minefinders (MFN) (MFL.to)

The last time we had a 13G from Vanguard*on its position in Minefinders (MFN) (MFL.to) was back in March 2011 when it declared a holding of 9,266,907, representing 11.62% of shares out at that time. 

Today Vanguard filed an update to tell us that it now holds 12,200,000 shares of MFN, representing 14.70% of S/O.

Interesting timing, what with the Pan American (PAA.to) (PAAS) buyout move, dontcha think?

* Specifically, "VANGUARD SPECIALIZED FUNDS - VANGUARD PRECIOUS METALS AND MINING FUND"