The largest of several northern Utah wildfires that crews have been battling this week was extinguished earlier than expected, and no new fires were being fought Friday morning.

A blaze on Bureau of Land Management territory near Dugway Proving Ground that was apparently started about 1 p.m. Wednesday by artillery fire from a National Guard exercise was out by 7:30 p.m. Thursday, well before midnight, when

officials originally predicted containment. The blaze totaled 9,860 acres, said Pete Hansen, Interagency Fire Center manager.

Crews contained one other man caused fire in Puddle Valley west of the Great Salt Lake Wednesday and put out several other very small fires started by lightning strikes.

A lightning-caused fire in east-central Utah's Book Cliffs has burned itself out after blackening about 100 acres, BLM officials said Friday.

The fire was in the Coal Canyon wilderness study area, north of Cisco, said BLM spokeswoman Mary Plumb. Because of the area's pro tected status, the BLM decided not to immediately man the fire.