The South Dakota Department of Environment and Natural Resources provides an interactive map of over 6,000 sand, gravel, and construction aggregate mining operations in South Dakota.
The map shows reclaimed (green) and active (red) mines. Users can click on individual sites to find detailed information, including location, operator, material mined, mining dates, total area mined and reclaimed, and links to photographs.
The U.S. Geological Survey's National Coal Resources Data System comes with an interactive map that provides a huge amount of information on the distribution, thickness, and classification of coal in the United States.
The interactive map contains over 250,000 data points, each typically representing a core sample, drill hole, or driller's log in a specific location. You can use the "Filter" tool to focus in on specific areas, or on data collected by specific organizations. Commonly available data include:
Tar sands (also called oil sands) are a mixture of sand, clay, water, and bitumen. Bitumen is a thick, sticky, black oil that can form naturally in a variety of ways, usually when lighter oil is degraded by bacteria. Bitumen has long been used in waterproofing materials for buildings, and is most familiar today as the binding agent in road asphalt.
Representative Duncan Hunter (R-CA-50) introduced the "Materials Essential to American Leadership and Security (METALS) Act" (H.R.1407) to ensure the U.S. has access to a sustainable and secure supply of materials to safeguard our national security on March 7.