This paper focuses on research concerning the ecotoxicological properties of granulated slag from the pilot production of gray iron with red mud addition and concrete composites with the application of this slag. Red mud is a hazardous waste generated in the production of aluminium oxide. Negative ecotoxicological tests are, therefore, one of the basic prerequisites for the ability to use granulated slag from gray iron pilot production. Granulated slag and concrete composite samples with various ratios of granulated slag have been subject to ecotoxicity tests: determining root growth inhibition in the highly-cultivated plant Sinapis alba, and determining acute toxicity in Daphnia magna. The results of ecotoxicological testing of granulated slag from gray iron standard production and gray iron pilot production with the additive were, according to the standard (STN 83 8303), negative. Additionally, the results of ecotoxicological tests of concrete composites were negative, with the exception of a 50% substitution of fine aggregate with slag from gray iron pilot production.

Slovakia, as part of the European Union, participates in all forms of regional development and sustainability. A transparent form of regional development and sustainability is regional labeling, which has a 10-year tradition. Our regions represent excellent potential for the development of domestic products. Acceptance of essential requirements for regional products (domestic raw materials, manual work share, respect for the environment) opens up opportunities for the labor market, promotes tourism, and increases citizens’ purchase ability, none of which are clearly demonstrable in Slovak regions. Residents of individual regions have specific approaches in relation to regional brands depending on the region studied. For the purpose of the survey, four regions of southern Slovakia (with common environmental morphology and different industrial development) were selected. Indicators of age, gender, education, monthly income, and location relative to regional product preferences were studied. The results obtained were processed by cluster analysis (as a way of segmenting consumers). An average conscious purchaser of regional products is a local productive middle-aged person with a secondary or tertiary education, either male or female, and from a more economically advanced region. The results show regional branding as a mobilizing function for connecting inhabitants and the subsequent joint presentation of regional activities.