FILE PHOTO: Matthew Chamberlain, the CEO of the London Metal Exchange speaks at the London Metal Exchange Seminar 2017 at the Queen Elizabeth II Centre in London, Britain October 30, 2017. REUTERS/Mary Turner/File Photo
FILE PHOTO: Matthew Chamberlain, the CEO of the London Metal Exchange speaks at the London Metal Exchange Seminar 2017 at the Queen Elizabeth II Centre in London, Britain October 30, 2017. REUTERS/Mary Turner/File Photo