First published by Money Metals here: https://www.moneymetals.com/news/2018/04/02/largest-silver-producer-down-20-percent-001449

Silver mine supply from the world’s fourth-largest silver producer fell significantly at the beginning of 2018. According to Chile’s Ministry of Mines, domestic silver production in January declined 20% versus the same month last year. Chile’s silver production has been falling considerably since its recent peak in 2014.