Brush fire scorched 15 to 20 acres in Sylmar due to construction workers grinding metal

A brush fire sparked by construction workers grinding metal scorched 15 to 20 acres above Sylmar today before being brought under control, authorities said.

The fire was reported just after 3 p.m. in the 11200 block of North Wheatland Avenue, according to the Los Angeles Fire Department, which got help from county and Angeles National Forest crews in the ground and aerial attack.

Nearly 150 firefighters responded and had the fire knocked down in an hour and 14 minutes, according to LAFD spokeswoman Margaret Stewart.

Helicopters, including an Air Crane, were employed along with a Super Scooper fixed-wing water-dropping plane, Stewart said.

Crews were expected to remain on scene for several hours dousing "hot spots."

Copyright 2015 FOX 11 Los Angeles : Download our mobile app for breaking news alerts or to watch FOX 11 News | Follow us on Facebook , Twitter and YouTube .