AFL President Sam Gompers and Secretary of War Newton Baker sign an agreement establishing a three-member board of adjustment to control wages, hours and working conditions for construction workers employed on government projects. The agreement protected union wage and hour standards for the duration of World War I - 1917

260 die in Butte mine disaster; 14,000 strike against unsafe conditions – 1917

Spectator mine disaster kills 168, Butte, Mont. – 1917