The London Metal Exchange (LME) is a global marketplace for trading industrial metals. Established in 1877, it facilitates the buying and selling of metals like copper, aluminum, and zinc. The LME operates through a system of open outcry trading and electronic platforms, allowing participants to manage price risks and secure supply. The exchange plays a crucial role in setting benchmark prices for metals, influencing global markets. It offers various contracts, including futures and options, which help businesses hedge against price fluctuations. The LME is essential for producers, consumers, and investors in the metals industry.