Peter Smith is an independent consultant based in Europe with 30 years of experience in the onshore and offshore sectors of the oil and gas industry. He has worked on design and construction projects for, Exxon, Total, Mobil, Woodside Petroleum, Shell, Statoil, Bluewater, Elf, and Huffco Indonesia.R.W. Zappe is a retired consultant for ICI Australia Operations Pty. Ltd., where he had been employed since 1950. A graduate of Technical University Wuppertal in mechanical engineering, he also worked for Dragerwerk, Lubeck as a design engineer for respiratory equipment until he founded a small manufacturing company in Hamburg.