Talk:Copper sweetening

External links modified
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I have just modified one external link on Copper sweetening. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
 * Added archive https://web.archive.org/web/20110714012834/http://productsearch.machinedesign.com/definition/Chemical_Engineering/Linde_copper_sweetening to http://productsearch.machinedesign.com/definition/Chemical_Engineering/Linde_copper_sweetening

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Cheers.— InternetArchiveBot  (Report bug) 00:14, 13 August 2017 (UTC)