Repression, led by Generals Emil Macri and Nicolae Pleșiță, took various forms. After Dobre spoke, the miners realised he would be targeted and so guarded his residence in order to prevent his arrest. He was not arrested on the spot; instead, the authorities busied themselves with identifying the miners: engineers and section heads were called to Securitate headquarters to identify them from pictures that had been taken secretly. All strikers who were party members were sanctioned or even removed from the party. Some of the miners were sent back to their native counties. Those who were considered to have been violent during the strike were tried and sentenced to 2–5 years' imprisonment through correctional labour for disturbing the public order and offending good morals. In practice, correctional labour meant internal deportation, although some strikers did go to prison. The miners were intimidated and attacked, along with their families in certain cases. Miners who were questioned were insistently asked never again to strike or speak out against the party. Many strikers were called to the Petroșani Securitate building, where they were repeatedly mistreated during interrogations by, for instance, being beaten over the head and having their fingers bound to doors. The ensuing investigation tried to discover where the core of support for the strike lay, and while some 4,000 workers were moved to other mining areas in the following months, others were said to have ended up in labour camps on the Danube-Black Sea Canal. The main strike leaders disappeared within weeks, with other outspoken miners rounded up piecemeal and dispersed over the next few months. The concessions held long enough for the authorities to break the organisational backbone of the resistance, but eventually most of these were withdrawn and the eight-hour workday imposed, though this was not made official until 1983.