Matthew J. King has over 25 years experience in copper smelter operations and sulfuric acid plant projects. The first eight years of his career were spent in various operations roles at a copper smelter. During that period, he completed his PhD focused on control and optimisation of metallurgical sulphuric acid plants. His career since then has been based in Australia, focusing mainly on sulfuric acid plant design and operations with some work in copper smelting, off-gas handling and steam systems design. Matthew is a co-author of five technical monographs, including the latest editions of Elsevier titles Sulfuric Acid Manufacture and Extractive Metallurgy of Copper.