Anglo American Reports 15% YoY Decline in Q1 Copper Production. On Thursday, April 24, global miner Anglo American reported a 15% YoY decline in Q1 copper production but maintained its full-year production guidance unchanged. The London-listed miner stated that Q1 copper production was 168,900 mt, reflecting increased production in Peru due to higher ore grades, which was offset by planned production declines in Chile. (Webstock Inc.)