Odour and hydrogen sulfide (H2S) release during agitation and pumping of stored manure can often cause neighbours to complain. Increased levels of H2S inside or near animal buildings impact the safety and health of both animals and people. The evaluation of air emissions during manure agitation and pumping is a critical exercise in order to address some of the issues facing livestock producers and regulatory agencies. This paper summarizes results obtained from three different hog farms and one dairy farm that were monitored for odour and H2S emissions during agitation/pumping events in Minnesota, USA. Data will also be useful for developing control strategies.