As of 2:30 pm Monday, several Brown County fire departments were still fighting grass fires on Highway 377 South in the vicinity of the 3M plant. Highway 377 was closed to traffic in south Brownwood as of 1:30 pm. Traffic was being detoured around the hospital complex. A large helicopter with a basket swinging underneath was seen flying from a water source just west of the fire and dumping water directly on the main fire area which is on the side of the hill, immediately west of 3M. A nearby residential area was also evacuated. Fire threatened some businesses on the west side of the highway.