Raw Materials for Eco-Friendly Cement (IMAGE) Martin-Luther-Universität Halle-Wittenberg Caption These raw materials are necessary for the production of eco-friendly cement. Credit Sabrina Galluccio / MLU Usage Restrictions use with credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.