ASTM has proposed ASTM WK42045, Practice for Nitric Acid-Extraction of Elements from Ores and Related Metallurgical Materials Using Closed Vessel Microwave Heating, a standard to protect water quality from mining and metals processing operations. Charles Bucknam, senior consultant of analytical development at Newmont Metallurgical Technologies, said metals dissolution can affect the environment during mining, processing, stockpiling and disposal […]
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