The American fire continued to grow Thursday, but fire officials reported good progress toward corralling the blaze, which started Aug. 10 northeast of Foresthill in Placer County.
As of Thursday evening, the blaze was reported 60 percent contained with 17,796 acres burned. U.S. Forest Service spokesman Peter Frenzen said 17.6 miles of fire line remain to be built.
"The big news is we secured the piece near Devil's Gate on the south end and a small piece northwest of Grass Falls," he said.
He said the fire was very active Thursday in the Antoine Canyon area, where it is burning in heavy vegetation.
Firefighters are focused on securing a barrier along the northeast corner of the fire. Full containment still is projected for Sept. 1.
Among other Northern California fires, the Swedes fire, which started Aug. 16 southeast of Oroville, is reported fully contained with 2,462 acres burned.
The Plumas Lightning Complex, 16 fires sparked by thunderstorms Sunday in the central and eastern portions of the Plumas National Forest, is reported 40 percent contained with 531 acres burned. All evacuations have been lifted and fire officials project full containment Saturday.
Call The Bee's Cathy Locke, (916) 321-5287.