After 85 years of service, the U.S. Bureau of Mines (USBM) closed in 1996. Certain functions, such as the collection, analysis, and dissemination of minerals information, have been returned to the U.S. Geological Survey (USGS). For information on former USBM programs or publications, please see the following sources:The National Technical Reports Library (part of the National Technical information...
How do we extract minerals?
What is the difference between a rock and a mineral?
Where can I find information about mineral commodities?
The USGS studies geologic processes that concentrate mineral resources in the Earth's crust, and assesses areas of undiscovered mineral resources. We also collect national and international information on mineral commodities.