The Nordic Council of Ministers, the BAT-group under Working Group for Sustainable Consumption and Production, has awarded Danish Meat Research Institute (DMRI) to deliver a review report on Best Available Techniques (BAT) for slaughterhouses and producers of animal by-products in relation to the Nordic industry. The intention with the report is to use it in the first step of the upcoming EU revision of a new slaughterhouse and animal by-products BAT-reference document (BREF). The project is based on questionnaires in which slaughterhouses and animal by-products industries from Denmark, Sweden, Norway and Finland were asked about their current production patterns, emissions and resource accounting, and relation to potentially dubious BATs (BATs that may be difficult to follow).