South32 Limited reported operating results for the second quarter and first half ended December 2016. For the quarter, the company reported alumina production of 1,320 kt compared to 1,302 kt a year ago. Aluminum production was 249 kt compared to 241 kt a year ago. Energy coal production was 7,518 kt compared to 8,339 kt a year ago. Metallurgical coal production was 1,392 kt compared to 1,219 kt a year ago. Manganese ore production was 1,253 kt compared to 909 kt a year ago. Manganese alloy production was 56 kt compared to 66 kt a year ago. Nickel production was 9.0 kt compared to 8.8 kt a year ago. Sliver production was 4,035 koz compared to 5,600 koz a year ago. Lead production was 35.5 kt compared to 48.4 kt a year ago. Zinc production was 24.4 kt compared to 22.2 kt a year ago. For the first half, the company reported alumina production of 2,613 kt compared to 2,666 kt a year ago. Aluminum production was 492 kt compared to 485 kt a year ago. Energy coal production was 15,709 kt compared to 17,037 kt a year ago. Metallurgical coal production was 2,829 kt compared to 3,298 kt a year ago. Manganese ore production was 2,433 kt compared to 2,346 kt a year ago. Manganese alloy production was 115 kt compared to 131 kt a year ago. Nickel production was 17.7 kt compared to 17.5 kt a year ago. Sliver production was 8,729 koz compared to 11,878 koz a year ago. Lead production was 73.9 kt compared to 97.5 kt a year ago. Zinc production was 42.1 kt compared to 41.8 kt a year ago.