A small fire burning on Big Pryor Mountain on U.S. Forest System land was about 80 percent contained Friday afternoon.
Smokejumpers and other firefighting personnel were dispatched to the Bent Spring fire about 40 miles south of Billings Wednesday afternoon to prevent its spread as the Northern Rockies region continues to transition into weather conditions ideal for wildfire starts and growth.
Friday mapping shows the fire was about 1.5 acres in size.
"They're actually using an infrared camera to go through and find spots that are still pretty hot," said Sarah Holm, a public affairs specialist with the Bureau of Land Management's Montana/Dakota office.
Crews are looking to demobilize soon but that will depend on where progress sits Friday night, Holm said Friday afternoon.
A cause for the fire has not been released.
Heavy timber, including lodgepole pines in varying states of decay, has fueled the fire. No structures have been threatened by the fire.
Six fire engines, eight smokejumpers and one helicopter were dispatched to the fire Wednesday.
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