* The Toronto Stock Exchange's TSX falls 1.61 percent to 19,517.32 

* Leading the index were Denison Mines Corp , up 4.3%, Cameco Corp, up 2.9%, and Bausch Health Companies Inc, higher by 2.6%.

* Lagging shares were Precision Drilling Corp, down 7.7%, Vermilion Energy Inc, down 7.0%, and First Quantum Minerals Ltd, lower by 7.0%.

* On the TSX 43 issues rose and 194 fell as a 0.2-to-1 ratio favored decliners. There was 1 new high and 13 new lows, with total volume of 152.3 million shares.

* The most heavily traded shares by volume were Suncor Energy Inc, Crescent Point Energy Corp and Baytex Energy Corp.

* The TSX's energy group fell 9.38 points, or 3.7%, while the financials sector slipped 4.25 points, or 1.2%.

* West Texas Intermediate crude futures fell 5.02%, or $4.87, to $92.14 a barrel. Brent crude  fell 5.38%, or $5.65, to $99.44 [O/R]

* The TSX is off 8% for the year.

This summary was machine generated August 30 at 20:03.