South32 Limited reported operating results for the second quarter and first half ended December 2017. For the quarter, the company reported alumina production of 1,262 kt compared to 1,320 kt a year ago. Aluminum production was 246 kt compared to 249 kt a year ago. Energy coal production was 6,987 kt compared to 7,518 kt a year ago. Metallurgical coal production was 788 kt compared to 1,392 kt a year ago. Manganese ore production was 1,526 kt compared to 1,253 kt a year ago. Manganese alloy production was 62 kt compared to 56 kt a year ago. Payable nickel production was 10.1 kt compared to 9.0 kt a year ago. Payable Sliver production was 2,412 koz compared to 4,035 koz a year ago. Payable Lead production was 23.6 kt compared to 35.5 kt a year ago. Payable Zinc production was 9.2 kt compared to 24.4 kt a year ago. For the first half, the company reported alumina production of 2,541 kt compared to 2,613 kt a year ago. Aluminum production was 495 kt compared to 492 kt a year ago. Energy coal production was 14,001 kt compared to 15,709 kt a year ago. Metallurgical coal production was 1,282 kt compared to 2,829 kt a year ago. Manganese ore production was 2,830 kt compared to 2,433 kt a year ago. Manganese alloy production was 118 kt compared to 115 kt a year ago. Nickel production was 21.8 kt compared to 17.7 kt a year ago. Sliver production was 5,175 koz compared to 8,729 koz a year ago. Lead production was 49.4 kt compared to 73.9 kt a year ago. Zinc production was 20.2 kt compared to 42.1 kt a year ago.