 After several lost their lives in a shooting war provoked by discovery of a company spy, the U.S. army forced an end to the strike.Hostilities erupted once again in 1899 when, in response to the company firing seventeen men for joining the union, the miners dynamited the Bunker Hill & Sullivan mill.Again, lives were lost, and the U.S. Army intervened, requested by Governor Frank Steunenberg, as the Idaho National Guard troops were still stationed in the Philippines following the Spanish–American War.