On a fattening pig farm all 582 animals died of peracute intoxication with
hydrogen sulphide (H2S). The accident took place after 6000 liters of lacti
c acid (41.5 mass %) was dumped in the slurry pit. The volume of released g
as was about 575 m(3). This resulted in sudden spreading by overpressure of
a lethal concentration of hydrogen sulphide to all compartments of the pig
house. Analysis of the situation indicated that the level of hydrogen sulp
hide was 7870 ppm.