urn:ddi:de.dezim:bfb9fb3d-649f-4b96-82c7-3fa3410852c2:1 de.dezim bfb9fb3d-649f-4b96-82c7-3fa3410852c2 1 el-masri@dezim-institut.de 1 [8110] Mining and Mineral Processing Plant Operators [8110] Mining and Mineral Processing Plant Operators