Bituminous coal miners had gone on strike in 1897 and had won a resounding victory. With success, the unions grew rapidly in size and spread to anthracite coal miners by 1899 and 1900. During that time, owners acquiesced to labor demands rather than impose on Republican William McKinley’s chances in the upcoming election. But in 1902, anthracite coal miners still lacked recognition for their unions and they did not have much say in the decisions that shaped their industry. Unwilling to concede even more, the company bosses refused arbitration and 100,000 United Mine Workers of America, comprising up to 80% of the workers in Pennsylvania, went on strike.
J.P. Morgan, owner of the Reading Railroad (of Monopoly fame) and financial autocrat, played a significant role in the negotiation process after intrigues involving the Federal mediation, the National Guard, Police and spies, but after 163 days, the strike ended with another labor victory. In the end, President Theodore Roosevelt proclaimed that the government sought to ensure a “Square Deal” (first usage ever) to both sides. The strike was a victory for the workers and help lead to Progressive Era reforms.