Matches in DBpedia 2014 for { ?s ?p Johann Christian Ruberg (baptized 4 September 1746 – 5 September 1807) was a German inventor and a pioneer in metallurgy.About 1798, Ruberg devised the first large-scale method for the production of zinc. This method (so-called "Silesian method"), used horizontal muffle furnaces which permitted for continuous operation, i.e., loading the input and unloading the product without cooling. This greatly improved the energy economy and labour intensity of the process.. }
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- Johann_Christian_Ruberg comment "Johann Christian Ruberg (baptized 4 September 1746 – 5 September 1807) was a German inventor and a pioneer in metallurgy.About 1798, Ruberg devised the first large-scale method for the production of zinc. This method (so-called "Silesian method"), used horizontal muffle furnaces which permitted for continuous operation, i.e., loading the input and unloading the product without cooling. This greatly improved the energy economy and labour intensity of the process.".