Dr. Xun is the Acting Chief of the Global Minerals Analysis Section at National Minerals Information Center, U.S. Geological Survey. The USGS minerals information mission is to provide unbiased statistics and information on the domestic and worldwide supply of, demand for, and flow of minerals and materials. Dr. Xun and his team publish annual reviews on minerals industry in various countries and special reports on global material supply chain related subjects. These publications can be found at https://www.usgs.gov/centers/national-minerals-information-center.