Natural resource extraction
Removal of natural materials or properties (such as heat) for use.
- Water quality studied in areas of unconventional oil and gas development, including areas where hydraulic fracturing techniques are used, in the United States [More info]
- Maps showing number of water quality samples in areas underlain by unconventional oil and gas resources, broken out by surface water and groundwater.
- World Coal Quality Inventory (WoCQI) [More info]
- Homepage of the World Coal Quality Inventory (WoCQI) with sample collection procedures.