BOISE, Idaho (AP) — If you thought the summer's smoky skies were a thing of the past, think again: Federal land managers say it's the season for fall burning activities. Starting next week, Bureau of Land Management officials on the Boise District plan to begin pile burning operations in several locations across southwestern Idaho. It's part of their annual effort to clean up slash piles created by crews who were trimming vegetation and reducing hazardous fuels. Overall, about 400 acres are due to get prescribed burns, with the largest covering about 200 acres near Silver City, the historic mining town. There is also a burning project near Bennett Mountain, north of Mountain Home, and on a couple of units near Smith's Ferry along U.S. Highway 55. Burning is slated to begin on Monday.