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TY - CONF AU - Braun, Marius AU - Lottermoser, Bernd G. TI - Sand and gravel mining in Germany: From the status quo to future strategic requirements CY - Aachen PB - Mainz Verlag M1 - RWTH-2019-08265 SP - 51 PY - 2019 T2 - 2. International Conference Mines of the Future CY - 13 Jun 2019 - 14 Jun 2019, Aachen (Germany) Y2 - 13 Jun 2019 - 14 Jun 2019 M2 - Aachen, Germany LB - PUB:(DE-HGF)1 ; PUB:(DE-HGF)7 ; PUB:(DE-HGF)8 UR - https://publications.rwth-aachen.de/record/766699 ER -