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.

Click here to access the interactive map.

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:

The Minnesota Department of Natural Resources' Aggregate Resources Web Map provides a large amount of information on aggregates in Minnesota. The map includes:

The West Virginia Geological and Economic Survey provides an interactive map of underground and surface coal mining activity in West Virginia. The map shows areas of active and historical coal mining in both underground and surface mines, with separate colors for auger and highwall mining.

The Utah Geological Survey has produced an interactive map showing the locations of more than 450 abandoned coal mines in Utah. For over half of these, detailed maps of the individual mines are available for download and further use.

The Washington State Coal Mine Map Collection from the Washington Division of Geology and Earth Resources allows users to find maps of coal mines (including abandoned coal mines) in the state of Washington. The interactive atlas provides shaded "map areas" that the user can click on to find maps of coal mines in each area.