Complex sentence: A large sawmill employing 200 workers had been operated in the village by industrial conglomerate UPM Kymmene, but it closed down a few years ago as a result of economic pressures.
Split into simpler sentences: A large sawmill employing 200 workers had been operated in the village by industrial conglomerate UPM Kymmene. But it closed down a few years ago as a result of economic pressures.