Hamm (dpa / lnw) - Ammonia escaped in a slaughterhouse in Hamm on Sunday. However, the building was so isolated that the gas did not escape outside, said a spokesman for the fire brigade. No one was injured, and there was never any danger to the population. In the meantime, the Hamm fire brigade was on site with its NBC unit in chemical protection suits. The "Westfälische Anzeiger" had reported.