Informed planning and decisions concerning future mineral supplies, sustainability, and resource development require a long-term global perspective and an integrated approach to land use and to resource and environmental management. This integrated approach further requires unbiased information on the global distribution of identified and undiscovered mineral resources, the economic factors influencing their development, and the environmental consequences of their exploitation. The U.S. Geological Survey (USGS), the principal Federal provider of research and information on nonfuel mineral resources, has completed a geology-based, cooperative international assessment of copper resources of the world. Collaborators in this assessment include mineral resource experts from national geological surveys and from industry and academia worldwide. This assessment indicates that in addition to identified copper resources of 2,100 million metric tons (Mt), a mean of 3,500 Mt of undiscovered copperis expected in 11 regions spanning six continents. Annual U.S. copper consumption is 2 Mt; global consumption is 20 Mt.
Johnson, K.M., Hammarstrom, J.M., Zientek, M.L., and Dicken, C. L. (2014). Estimate of Undiscovered Copper Resources of the World , 2013. Global Mineral Resource Assessment (p. 3). Retrieved from http://dx.doi.org/10.3133/fs20143004. http://dx.doi.org/10.3133/fs20143004