Geopolymers from mining tailings for more sustainable raw material supplyRobert Obenaus-Emler, Mirja Illikainen, Mahroo Falah, Päivi Kinnunen and Kari HeiskanenMATEC Web Conf., 274 (2019) 05001DOI: https://doi.org/10.1051/matecconf/201927405001