References
- U.S. Geologic Survey. 2017 Minerals Yearbook: Mining and Quarrying Trends. https://www.usgs.gov/centers/national-minerals-information-center/mining-and-quarrying#myb
- U.S. Department of Energy, Energy Information Administration. “Detailed data from the EIA-7A and the U.S. Mine Safety and Health Administration”, data pulled for year 2023. https://www.eia.gov/coal/data.php
- U.S. Census Bureau. 2023 County Business Patterns. https://www.census.gov/programs-surveys/cbp.html
- U.S. Environmental Protection Agency. 1998. National Air Pollutant Emission Trends Procedure Document for 1900-1996, EPA-454/R-98-008. https://www.epa.gov/sites/default/files/2015-07/documents/trends_procedures_old.pdf
- U.S. Environmental Protection Agency, AP-42, Fifth Edition, Volume 1, Chapter 13: Miscellaneous Sources, Section 13.2.4: Aggregate Handling and Storage Piles. https://www.epa.gov/sites/default/files/2020-10/documents/13.2.4_aggregate_handling_and_storage_piles.pdf
- U.S. Environmental Protection Agency. 1986. Generalized Particle Size Distributions for Use in Preparing Size-Specific Particulate Emissions Inventories, EPA-450/4-86-013. https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=2000FTAM.TXT
- U.S. Environmental Protection Agency, AP-42, Fifth Edition, Volume 1, Chapter 11: Mineral Products Industry, Section 11.9: Western Surface Coal Mining. https://www.epa.gov/sites/default/files/2020-10/documents/c11s09.pdf
- United States Environmental Protection Agency, AIRS Facility Subsystem Source Classification Codes and Emission Factor Listing for Criteria Air Pollutants, EPA-450/4-90-003, March 1990. https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=2000NAHA.TXT
- Midwest Research Institute. 2006. Background Document for Revisions to Fine Fraction Ratios Used for AP-42 Fugitive Dust Emission Factors, MRI Project No. 110397. https://www.epa.gov/sites/default/files/2020-10/documents/background_document_for_revisions_to_fine_fraction_ratios_used_for_ap-42_fugitive_dust_emission.pdf