Pemberton Mill

The Pemberton Mill was a large textiles factory in Lawrence, Massachusetts, originally built in 1853. On January 10, 1860, at around 4:30 p.m., a section of the building suddenly collapsed, trapping several hundred workers underneath the rubble, in what has been called "the worst industrial accident in Massachusetts history" and "one of the worst industrial calamities in American history." Of the hundreds crushed under the wreckage, an estimated 88 to 145 of them were killed instantly, and 166 were removed, albeit critically injured. Following the incident, as search-and-rescue efforts continued in an effort to locate survivors or bodies, a volunteer's handheld oil lamp was accidentally knocked, spilling its burning oil onto the wreckage; a massive fire soon enveloped the site, preventing the rescue of many potential survivors. The blaze spread quickly, due to the mill containing a large amount of lumber, as well as chemical-laden machinery and the large amounts of cotton, denim, flannel, and other flammable materials produced therein. Investigators attributed the disaster to substandard construction that was then drastically overloaded with second-floor equipment, all evident and preventable. The event was cited in improvements to industrial construction and workplace safety. The mill was soon rebuilt in place.