the unheralded feb 13, 1975 wtc fire
On the 11th floor of the North tower, a fire broke loose to the 9th-14th floors of the building. At the time, there was no sprinkler systems installed in the building. It took firefights two hours to put out the fire. It also damaged a few floors below the 9th floor from water being sprayed onto the fires.
a 19y.o. was charged with arson.
more:
https://www.fireengineering.com/lead...ter-fire/#gref
