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New efforts to improve quality control through the use of Statistical Quality Control techniques were introduced to the Dow Magnesium Extraction Process. All the employees in the magnesium plants were trained in the Statistical Quality Control procedures. Successful application has lead to improved chemical purity and reduced variability in the feed process. These improvements were followed by better reduction cell operation, improvements in alloying and casting operations. Consistent quality, high purity magnesium alloys are now available for use in automotive applications.