US production of Aluminium and Copper declined in Q4 2017 as per the latest report from United States Geological Survey (USGS). Production of secondary aluminum and copper decreased slightly in the fourth quarter of 2017, whereas iron ore and zinc increased by 8% and slightly, respectively, compared with that in the third quarter of 2017. Secondary aluminum production remained essentially unchanged in 2017 compared with 2016.
Copper production decreased throughout 2017 and was 12% lower than that in 2016, continuing the decline that began in 2016. Iron ore production increased by 19% in 2017 compared with that in 2016 and surpassed the indexed production value for the first time since the first quarter of 2015. Zinc production in 2017 was 4% lower than that in 2016, but production trended upward from the second quarter through the fourth quarter of 2017.
During the fourth quarter of 2017, gold production was essentially unchanged and silver production increased by 4% compared with production in the third quarter of 2017. Gold Production fluctuated in 2017 but overall it increased by 3% as compared with 2016 whereas silver production decreased by 10% compared with 2016