A documentary crew follows the December 1978 “big repair” at the Bernburg (Saale) cement works, normally shut only for maintenance, where management has cut the planned 16-day turnaround to 14, with a 15 000 M bonus (rising to 20 000 M if finished a day early). As cameras roll through cement dust, crew and workers discuss the twice-yearly overhaul, familiar crews, and gritty camaraderie. They learn that chronic spare-parts shortages force constant improvisation, and that bureaucratic red tape we...