Primary from reduction

In 1997, domestic primary aluminum production totaled just over 3.6 million metric tons (7.9 billion pounds. Thirteen companies operated 22 primary aluminum reduction plants, and 1 plant remained closed. Montana, Oregon, and Washington accounted for 38% of the production Kentucky, North Carolina, South Carolina, and Tennessee, 21% and other States, 41%. Aluminum recovered in 1997 from purchased scrap was almost 3.5 million metric tons (7.7 billion pounds), of which 50% came from new (manufacturing) scrap and 50% from old scrap (discarded aluminum products) (USGS 1997a, 1998, 1999). 

In an outer-sphere transfer, an electron moves from reductant to oxidant with no chemical alteration of the primary coordination spheres. 

Standards of Performance for Secondary Emissions From Basic Oxygen Process Steelmaking Facilities for Which Construction Is Commenced After January 20, 1983 Standards of Performance for Sewage Treatment Plants Standards of Performance for Primary Copper Smelters Standards of Performance for Primary Zinc Smelters Standards of Performance for Primary Lead Smelters Standards of Performance for Primary Aluminum Reduction Plants... 

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