In the meantime trouble was brewing in other concerns operated by the Carnegie Company. Mr. Frick had already signed the scale at the Pittsburgh and Beaver Falls mills, and expected to accomplish at these plants much of the work which was suspended at Homestead. The workmen at both places, however, sympathized with their brethren at Homestead and decided accordingly to break their contract with the firm and go out on strike until the trouble at Homestead should be fairly adjusted. The Pittsburgh men, employed at the Upper and Lower Union Mills in Lawrenceville, went out on July 15 and the Beaver Falls men on the following day. The mill at Duquesne was non-union, but there, too, the spirit of resistance manifested itself and on July 19, the men took preliminary steps toward entering the Amalgamated Association so as to be in proper shape to strike. On July 20 the Duquesne lodges were permanently organized and on the 23d a strike was declared. Homestead was now, in a degree, under martial law, the power of the borough authorities being limited to the arrest of drunken and disorderly persons. Two companies of soldiers did guard duty on the streets and had orders to arrest any of Burgess McLuckie's special policemen found exceeding their duty. Life in Camp Black was anything but a bed of roses. Colonel Hawkins' command spent two days and nights on the hills above Port Perry without tents and suffered much from the inclemency of the weather, broiling heat alternating with rain that drenched the men to the skin. A storm blew down most of the tents on the second day of the encampment. The first alarm that brought the soldiers out occurred after midnight on July 15. Someone brought in word that the camp was to be attacked from the rear. Bugles were sounded, the drums beat to arms, and in a few minutes the Second and Third brigades were ready for action and threw out their skirmish lines, while the force of pickets was doubled. The alarm proved to be a false one; nevertheless the Sixteenth regiment was kept under arms until daybreak.