The Minnesota Department of Natural Resources provides an interactive map of underground mines in Minnesota. The map provides detailed information on underground mines and their relationship to overlying surface features. Specifically, this map focuses on iron mines in the northeast of the state.
The North Dakota Public Service Commission provides an interactive map showing the locations of known abandoned mines in North Dakota. Users can click on an individual mine for more information, including the type of mine and the amount of information available for each mine.
The House Natural Resources Subcommittee on Energy and Mineral Resources discussed three bills introduced before the August recess. Two of these bills seek to amend to the Mineral Leasing Act of 1920, while the third bill proposes a new method for state onshore oil and gas leasing on federal lands.
Biomining is the process of using microorganisms (microbes) to extract metals of economic interest from rock ores or mine waste. Biomining techniques may also be used to clean up sites that have been polluted with metals.
On July 20, the House Natural Resources Subcommittee on Energy and Mineral Resources held an oversight hearing to discuss the future of hardrock mining in the United States. Streamlining the permitting process, royalties reform, and reclamation concerns were among the topics discussed at the hearing.