The 2009 massive blow-down of trees that damaged more than 100,000 acres of forestlands in Missouri is making firefighting efforts slow-going on the 5,000-acre fire in Mark Twain National Forest in southern Dent County.

Mark Twain National Forest Salem District Ranger Thom Haines said rainfall Thursday helped firefighters contain several suspected arson fires in the Salem Ranger District, but no timeframe is predicted for completing the firefighting efforts there.