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October 1, 2024

Mine lands are prevalent across the United States, and to monitor mines using solely on-the-ground measurements can be costly and time-consuming. In a new report funded by the Bipartisan Infrastructure Law, USGS researchers provide an overview of remote sensing and its use in assessing mine land recovery, while also highlighting the associated benefits and potential challenges. 

series of remotely captured images showing changes in landscape over time
A timeseries of near-infrared/red/green Landsat bands (1986-2020) in the Leewood region of West Virginia. This animation demonstrates the dynamic landscape changes as surface mining activities increase (non-red), followed by restoration (red colors). The animation was generated by using Google Earth Engine and LandTrendr.

 

Mine lands occur across the United States and present a range of environmental hazards and safety risks to human communities and wildlife habitats. However, limited information exists on the whereabouts of mining activities and their potential environmental effects on landscapes. 

Remote sensing is the process of acquiring information about the landscape from ground platforms, aircraft, or satellites to assess surface characteristics such as topography, vegetation, and soil properties and can therefore provide important cost-effective methods for identifying mining sites and assessing their environmental effects. 

Based on a literature review of 85 papers about remote-sensing applications that assess land health conditions and monitoring of mine lands, this report highlights important approaches, capabilities, considerations, and case studies using a breadth of techniques. 

graphic of three types of remote sensing used to image mining activity
Three-dimensional rendering of the Falcon #1 Coal Mine in Eskdale, West Virginia. The center panel depicts aerial photography, while the left and right panels reflect pre-mining (1985) and recent mining activity (2022) vegetation and terrain conditions. Green areas indicate vegetation while brown areas reflect bare ground. 

Specifically, the report provides: 

  1. Background of mining and laws guiding recovery efforts, 
  2. An overview of remote sensing and its use in assessing mine land recovery, 
  3. Considerations for setting appropriate recovery targets and how these may relate to different types of remote sensing data,
  4. A list of example studies using remote sensing for monitoring mine land recovery, 
  5. A discussion about both the benefits and potential shortcomings/challenges associated with using remote sensing data to assess mine land recovery, and 
  6. A non-exhaustive list of helpful resources for potential users. 

The report will benefit practitioners and stakeholders interested in how remote sensing could be applied to evaluating recovery targets. 

Different types of mines and mining activities that are possible across a mountainous landscape
The three main mining types and associated hazards (groundwater contamination, potential effects on surface water from runoff, open adits, and open pits), mitigation efforts (bat bars, fences, evaporation ponds, soil remediation), and monitoring methods (groundwater monitoring wells, remote sensing monitoring, field monitoring). Figure 5A from O'Donnell and others (2024). Illustration by Kimber Peterson (USGS) and David Bruce (USGS).

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