in samples provided to him by a russian mining engineer named samarsky-bykhovets. the mineral was eventually named samskarite after its discoverer. when french chemist paul emile lecoq de boisbaudran isolated an oxide of a new element from the mineral in , he named it after the mineral, making samarium...
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protection act, does not consider the use of chemical compounds manufactured from tin, tantalum, tungsten, or gold ( tgs) to be covered by the final rule. the reporting requirements do not extend to these chemically distinct compounds that are manufactured from a covered metal derivative because these substances...
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