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The Mur is known to carry small quantities of [[gold]], not enough to be suitable for exploitation today, but this was a focus of activity for many people since ancient times. Organized [[research]] and exploitation of gold and other local resources was encouraged for the first time in 1772.
In Austria, several [[hydroelectric dam]]s have been constructed for the production of [[renewable energy]]. The word "renewable" may be misleading in the case of smaller hydroelectric plants whose output is small by comparison to the environmental cost of construction. Currently in 2017, a hydroelectric dam is under construction in Puntigam, a few km south of the Graz city centre. The plan includes a massive sewage pipe between the city centre and the new dam, necessitating the felling of thousands of trees. The project is controversial and environmental groups are resisting it. Both environmental impact and economic studies have found the project to be neither ecologically nor economically viable <ref>http://www.rettetdiemur.at</ref>.
==Monitoring==
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