Mining engineer/Metallurgist and related professional conducts research on, designs, develops and maintains commercial-scale methods of extracting metals from their ores, or minerals, water, oil or gas from the earth and of developing new alloys, ceramic and other materials, or studies and advises on mining or metallurgical aspects of particular materials, products or processes. He/she determines operating parameters such as temperatures, pressures and other variable factors in extractive processes to ensure products are of required quality in commercial quantities.