April 29 (Reuters) - Canada's main stock index edged lower at open on Monday, led by losses in energy and mining stocks, as investors remained on the sidelines ahead of the country's economy data.
* At 9:30 a.m. ET (13:30 GMT), the Toronto Stock Exchange's S&P/TSX composite index .GSPTSE was down 18.73 points, or 0.11 percent, at 16,594.73.