Knight joined the company in August 2016 and was previously the Fertilizer Team's Cost Analyst contributing to the Nitrogen, Phosphate and Potash Cost Reports. Prior to joining CRU, Humphrey worked as a geologist at a major lead-zinc mine in the Republic of Ireland and at a gold exploration project in Mexico. He holds an MSci in Geology from Imperial College London and an MSc in Mining Geology from Camborne School of Mines (University of Exeter).