The lightning-caused Casner Fire, that started and made a run Tuesday is now 90-percent contained and has burned just over 300 acres. Fire officials say the wildfire has seen no growth since Tuesday and containment has been helped thunderstorms in the area. The fire is located north of the Beaver Creek Wilderness. The reason the acreage grew on the fire is due to better mapping. One hotshot crew, one hand crew and one engine worked the perimeter of the fire Thursday.