A massive industrial fire is burning in Darby Township, Delaware County. Chopper 3 was over the scene where a large plume of dark black smoke could be seen. Multiple crews were working on putting the flames out. All residents are being asked to avoid the area of Calcon Hook and Hook Roads, according to the Township of Darby. According to Delaware County officials, the fire is burning at a junk yard near the EMR Recycling facility. CBS News Philadelphia is working to confirm what started the fire. #delawarecounty #delawareco #delco #darbytwp #darbytownship #philadelphia #philly