 Complete the following phrase:  After moving back to Mauritania, he began working for the Société nationale industrielle et minière SNIM, which mines for iron in Mauritania, and he became head of a steel mill in 1979. Between 1985 and 1988 Hademine served as Head of Department purchases for SNIM. In 1989, he was promoted to CEO of the Arab Society of Iron and Steel SAFA, which is a subsidiary of SNIM. Hademine was appointed general manager of the Sanitation Maintece and Transportation Works SMTA in 2008. He said there were too many engineers in the SMTA and the quality of work was poor. After the 