Firestone Tire And Rubber Factory Goes Up In Flames In Fall River

A massive fire on the Fall River waterfront caused $13 million in damages, burning 30,000 tons of rubber products. The fire, which started in a Firestone plant, was discovered by a night worker. Firefighters from 30 cities in Massachusetts and Rhode Island battled the blaze, which was contained due to a shift in the wind. The FBI launched an investigation, and while many workers were left idle, most defense orders were unaffected.

What event triggered the fire according to the night workman?

Which organizations assisted in fighting the blaze?