The Rock Springs massacre, also known as the Rock Springs Riot, occurred on September 2, 1885, in the present-day United States city of Rock Springs, Wyoming, in Sweetwater County. The riot, between Chinese immigrant miners and white immigrant miners, was the result of racial tensions and an ongoing labor dispute over the Union Pacific Coal Department's policy of paying Chinese miners lower wages than white miners. This policy caused the Chinese to be hired over the white miners, which further angered the white miners and contributed to the riot. Racial tensions were an even bigger factor in the massacre. When the rioting ended, at least 28 Chinese miners were dead and 15 were injured. Rioters burned 75 Chinese homes resulting in approximately US$150,000 in property damage ($ in present-day terms).