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Doré bar
A doré bar is a semi-pure alloy of gold and silver, usually created at the site of a mine. It is then transported to a refinery for further purification. The proportions of silver and gold can vary widely. Doré bars weigh as much as 25 kg. == Associated industry codes == According to the United States Census Bureau,〔http://www.census.gov/〕 the creation of doré bars is conducted at establishments engaged either in "Gold Ore Mining" (NAICS Code 212221),〔http://www.census.gov/epcd/naics02/def/ND212221.HTM〕 or "Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum)" (NAICS Code 331419).〔http://www.census.gov/epcd/naics02/def/ND331419.HTM〕
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Doré bar」の詳細全文を読む
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