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Crews and resources were being mustered late Saturday to fight a rash of new, lightning-caused wildfires in the west Utah desert.

Heather O'Hanlon, spokeswoman for the Bureau of Land Management, said that the largest of the new blazes — the Dallas Canyon Fire, burning in a Tooele County's Cedar Mountain Wilderness Area — had scorched about 2,000 acres of brush and grass. There was no estimate for when it would be contained.

"We had people working through the night on that fire and the others that were started by lightning when a storm moved through the area early Friday," O'Hanlon said. "{Saturday] is has mostly been an access and terrain issue; the terrain is steep, rugged and remote."

Firefighters, initially limited to hand crews with air resources stretched thin, also were tackling three smaller fires, including another, 6-acre fire in the Cedar Mountains; a 40-acre blaze on Grassy Mountain, and a 10-acre fire on Lake Mountain. By Saturday afternoon, however, several water-bearing helicopters joined the fight with about 90 firefighters on the ground.

No injuries had been reported and no structures had been lost, O'Hanlon said.