TORONTO, Jan 31 (Reuters) - Toronto Stock Exchange S&P/TSX composite index .GSPTSE :
* Falls 48.31 points, or 0.28 percent, to 17,442.25 at open.TORONTO, Jan 31 (Reuters) - Toronto Stock Exchange S&P/TSX composite index .GSPTSE :
* Unofficially closes down 172.07 points, or 0.98 percent, at 17,318.49.