July 6

Two strikers and a bystander are killed, 30 seriously wounded by police in Duluth, Minn. The workers, mostly immigrants building the city’s streets and sewers, struck after contractors reneged on a promise to pay $1.75 a day - 1889
 
Two barges, loaded with Pinkerton thugs hired by the Carnegie Steel Co., land on the south bank of the Monongahela River in Homestead, Pa., seeking to occupy Carnegie Steel Works and put down a strike by members of the Amalgamated Association of Iron & Steel Workers - 1892

Rail union leader Eugene V. Debs is arrested during the Pullman strike, described by the New York Times as "a struggle between the greatest and most important labor organization and the entire railroad capital" that involved some 250,000 workers in 27 states at its peak - 1894

Transit workers in New York begin what is to be an unsuccessful 3-week strike against the then-privately owned IRT subway. Most transit workers labored seven days a week, up to 11.5 hours a day - 1926

Explosions and fires destroy the Piper Alpha drilling platform in the North Sea, killing 167 oil workers—the worse loss of life ever in an offshore oil disaster.  The operator, Occidental, was found guilty of having inadequate maintenance and safety procedures, but no criminal charges were ever brought - 1988

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