. . . "2016-09-16" . . . "Mineral industries"@en . . . "Mineral industries"@en . . . "Metallurgy"@en . . "nyu" . . "Mines and mineral resources"@en . . "Metallurgy"@en . . "Metals"@en . . "Dover Publications, Inc.," . . "9780486600062" . "0486600068" . . "Mines and mineral resources"@en . . "Agricola" . "Georg" . "Georg Agricola" . "1494" . "1555," . . "la" . . "Mineracao"@en . . "Minerals"@en . . . . "en" . . . . . . . "1950" . . . . . . . . . . "3117789" . "De re metallica"@en . . . "3117789" . "Early works"@en . . . . . "New 1950 edition." . . "Biographical sketch -- Translation of Books I-XII -- I. Arguments against the art of mining art -- II. The miner and the mining of veins -- III. Veins and stringers and seams in the rocks -- IV. The method of delimiting veins and the functions of the mining officials -- V. The digging of ore and the surveyor's art -- VI. The miners' tools and machines -- VII. The assaying of ore -- VIII. Rules for the work of roasting, crushing, and washing the ore -- IX. Methods of smelting ores -- X. The work of separating silver from gold, and lead from gold and silver -- XI. Separating silver from copper -- XII. Rules for manufacturing salt, soda, alum, vitriol, sulphur, bitumen, and glass -- Agricola's works -- Ancient authors on mineralogy, mining, metalurgy -- Nomenclature to be adopted for weights and measures -- Index."@en . . . . . "De re metallica." . "Online version:" . . "Hoover" . "Herbert" . "Herbert Hoover" . "1874" . "1964," . . "Hoover" . "Lou Henry" . "Lou Henry Hoover" . "1874" . "1944," . . "Mineralogia"@en . . "Engenharia Metalurgica E De Materiais"@en . . "Historia"@en .