31. The Pemberton Mill

Location: Lawrence, MA

Year of Fail: 1860

An estimated 145 workers were killed and 166 injured in 1860 when the upper floors of the mill came down on those below without any advanced warning. The extra-heavy machinery crowding the top floor, along with poorly mortared walls and cheap, brittle iron pillars are believed to have caused the disaster. While rescuing the 600 workers, someone knocked over an oil lantern, setting the ruins aflame. One man trapped in the rubble supposedly slit his own throat to avoid being burned alive.