Here was cause for exasperation, and a furious mob, composed of strikers, idle factory hands, and miners, tramps, communists, and outcasts, began its work of vengeance and plunder. Possessed of firearms, through breaking into a number of gun shops, they attacked the Philadelphia soldiers, who had withdrawn to the railroad roundhouse, and a fierce battle ensued. Unable to dislodge the soldiers by assault, the rioters attempted to roast them out by setting fire to cars of coke saturated with petroleum and pushing these down the track against the roundhouse. This eventually forced the soldiers to leave the building, but, though pursued by the rioters, they made a good retreat across the Allegheny River. The mob, completely beyond control, began the destruction of railroad property. The torch was applied to two roundhouses, to railroad sheds, shops and offices, cars and locomotives. Barrels of spirits, taken from the freight cars, and opened and drunk, made demons of the men, and the work of plunder and destruction of goods in transit went on with renewed fury. That Saturday night Pittsburg witnessed a reign of terror. On Sunday the rioting and pillage were continued, and in the afternoon the Union Depot and Railroad Hotel and an elevator near by were burned. Then as the rioters were satiated and too drunk to be longer dangerous, the riot died out: it was not checked. On Monday, through the action of the authorities, armed companies of law-abiding citizens, and some faithful companies of the militia, order was restored. But meanwhile the strike had spread to a large number of other railroads between the seaboard and Chicago and St. Louis. Freight traffic was entirely suspended, and passenger trains were run only on sufferance of the strikers. Business was paralyzed, and the condition of disorganization and unrest continued throughout the month of July. The governors of West Virginia, Maryland, Pennsylvania, and Illinois called upon the President for United States troops, which were promptly sent, and in Indiana and Missouri they were employed on the demand of the United States marshals. Where the regular soldiers appeared order was at once restored without bloodshed, and it was said that the rioters feared one Federal bayonet more than a whole company of militia. The gravity of the situation is attested by three proclamations of warning from President Hayes.