In what is described as the worst industrial disaster in state history, the Pemberton Mill in Lawrence, Mass., collapses, trapping 900 workers, mostly Irish women. More than 100 die, scores more injured in the collapse and ensuing fire. Too much machinery had been crammed into the building - 1860
A Mediation Commission appointed by President Woodrow Wilson finds that "industry?s failure to deal with unions" is the prime reason for labor strife in war industries - 1918
The largest slave revolt in U.S. history begins on Louisiana sugar plantations. Slaves armed with hand tools marched toward New Orleans, setting plantations and crops on fire, building their numbers to an estimated 300-500 as they went. The uprising lasted for two days before being brutally suppressed by the military - 1811
An explosion at Osage Coal and Mining Company?s Mine Number 11 near Krebs, Okla., kills 100, injures 150 when an untrained worker accidentally sets off a stash of explosives - 1892