Open pit rare earth element mine at Mountain Pass, California. Stepped sides of the pit and access for mining vehicles are shown.
Where can I get information about a mine's ownership or maps of a mine?
Mining records for shaft mining used to be maintained by the U.S. Bureau of Mines, which closed in 1996. Their records are in the National Archives and National Technical Reports Library. States are currently the best source for mine ownership records.
The USGS Mineral Resources Data System (MRDS) might provide some information. The U.S. Bureau of Mines database MAS/MILS (Mineral Availability System/Mineral Industry Location System) was merged into the USGS MRDS database in the early 2000s, so records from both predecessor databases might be present for an individual mine. The MAS/MILS records tend to emphasize economic and operational characteristics, and the MRDS tends to emphasize the geologic setting of the deposits, though this is a general statement and in many cases the records are mixtures of those themes.
The USGS does not produce maps of individual mines. The DOI Office of Surface Mining Reclamation and Enforcement has a National Mine Map Repository. The facility stores over 246,000 mine records of closed and/or abandoned, surface, and underground mines throughout the United States.
Related
What is a critical mineral?
Where can I find information about mineral commodities?
How do we extract minerals?
How many pounds of minerals are required by the average person in a year?
How can I find U.S. Bureau of Mines publications?
Open pit rare earth element mine at Mountain Pass, California. Stepped sides of the pit and access for mining vehicles are shown.

Title: Iron Mountain, California: An Extreme Acid Mine Drainage Environment
Title: Iron Mountain, California: An Extreme Acid Mine Drainage Environment

- The U.S. is increasingly reliant on supply of mineral raw materials from other countries.
- Advanced technologies are increasingly making use of nearly the entire periodic table of the elements.
- Dynamic studies of critical and strategic mineral supply and demand can identify emerging potential supply risks.
- The U.S. is increasingly reliant on supply of mineral raw materials from other countries.
- Advanced technologies are increasingly making use of nearly the entire periodic table of the elements.
- Dynamic studies of critical and strategic mineral supply and demand can identify emerging potential supply risks.
Supergene Leached zone at Silver Bell Mine, AZ.
Supergene Leached zone at Silver Bell Mine, AZ.
Production level in the Ray porphyry copper mine, AZ.
Production level in the Ray porphyry copper mine, AZ.
The abandoned mine inventory of the United States—A brief summary
U.S. Geological Survey mineral databases; MRDS and MAS/MILS
Related
What is a critical mineral?
Where can I find information about mineral commodities?
How do we extract minerals?
How many pounds of minerals are required by the average person in a year?
How can I find U.S. Bureau of Mines publications?
Open pit rare earth element mine at Mountain Pass, California. Stepped sides of the pit and access for mining vehicles are shown.
Open pit rare earth element mine at Mountain Pass, California. Stepped sides of the pit and access for mining vehicles are shown.

Title: Iron Mountain, California: An Extreme Acid Mine Drainage Environment
Title: Iron Mountain, California: An Extreme Acid Mine Drainage Environment

- The U.S. is increasingly reliant on supply of mineral raw materials from other countries.
- Advanced technologies are increasingly making use of nearly the entire periodic table of the elements.
- Dynamic studies of critical and strategic mineral supply and demand can identify emerging potential supply risks.
- The U.S. is increasingly reliant on supply of mineral raw materials from other countries.
- Advanced technologies are increasingly making use of nearly the entire periodic table of the elements.
- Dynamic studies of critical and strategic mineral supply and demand can identify emerging potential supply risks.
Supergene Leached zone at Silver Bell Mine, AZ.
Supergene Leached zone at Silver Bell Mine, AZ.
Production level in the Ray porphyry copper mine, AZ.
Production level in the Ray porphyry copper mine, AZ.