Mining and processing of minerals produce large quantities of tailings as waste. Some countries, including Norway, allow disposal of mine tailings in the sea. In this study we investigated the impacts of tailings from a calcium carbonate (CaCO3) processing plant on early live stages of haddock (<i>Melanogrammus aeglefinus</i>) and Atlantic cod (<i>Gadus morhua</i>). Fish eggs (3 days post fertilisation; ...