The yearly meeting attracts more than 250 mainly technical and safety experts from the NA (nitric acid) and AN (ammonium nitrate) industries worldwide and has become the ultimate conference for these people. The conference is organized by an executive in close cooperation with a host company being itself an AN and NA producer and by a group of exhibitors/vendors serving the two industries and sponsoring the conference. This set-up is unique and has created impressive results. The ANNA conference consists of an ammonium nitrate section which deals with AN solution and particulation technology, safety and environmental issues, and a nitric acid section dealing in particular with production technology, emission abatement and actual operational issues in the NA industry.