First published by Money Metals here: https://www.moneymetals.com/news/2017/11/15/silver-miner-production-decline-001269

It has been a rough year for many primary silver miners as two-thirds have suffered declines in production. Also, many high ranking silver producing countries are also experiencing a pronounced reduction in their domestic silver mine supply. According to the data put out by World Metal Statistics, Chile’s silver production is down 20% in the first eight months of the year, while Australia is down 19%, Mexico declined 2% and Peru lower by 1%.