<Tr> <Th> Official name </Th> <Td> Pinkerton Landing site </Td> </Tr> <Tr> <Th> Designated </Th> <Td> </Td> </Tr> <P> The Homestead strike, also known as the Homestead Steel strike, Pinkerton rebellion, or Homestead massacre, was an industrial lockout and strike which began on June 30, 1892, culminating in a battle between strikers and private security agents on July 6, 1892 . The battle was one of the most serious disputes in U.S. labor history, third behind the Ludlow Massacre and the Battle of Blair Mountain . The dispute occurred at the Homestead Steel Works in the Pittsburgh area town of Homestead, Pennsylvania, between the Amalgamated Association of Iron and Steel Workers (the AA) and the Carnegie Steel Company . The final result was a major defeat for the union and a setback for their efforts to unionize steelworkers . </P> <P> Carnegie Steel made major technological innovations in the 1880s, especially the installation of the open - hearth system at Homestead in 1886 . It now became possible to make steel suitable for structural beams and for armor plate for the United States Navy, which paid far higher prices for the premium product . In addition, the plant moved increasingly toward the continuous system of production . Carnegie installed vastly improved systems of material - handling, like overhead cranes, hoists, charging machines, and buggies . All of this greatly sped up the process of steelmaking, and allowed the production of vastly larger quantities of the product . As the mills expanded, the labor force grew rapidly, especially with less skilled workers . In response, the more - skilled union members reacted with a strike designed to protect their historic position . The bitterness grew between workers . </P>

A battle fought between amalgamated association of iron and steel union workers and guards