Date | January 10, 1860 |
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Time | 5 p.m. |
Location | Lawrence, Massachusetts |
Coordinates | 42°42′20″N 71°09′16″W / 42.70556°N 71.15444°W |
Cause | Structural failure from design flaws and overloading |
Deaths | 88–145 |
Non-fatal injuries | 166 |
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"[1] and "one of the worst industrial calamities in American history."[2] Of the hundreds crushed under the wreckage, an estimated 88[3] to 145 of them were killed instantly, and 166 were removed, albeit critically injured.[4]
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.