Source: U.S. Bureau of Labor Statistics
Release: Industry Productivity
Employment is the total number of wage and salary workers, unincorporated self-employed workers, and unpaid family workers working within business establishments. An individual who works multiple jobs at separate establishments would have each job included in the number of employees.
U.S. Bureau of Labor Statistics, Employment for Mining: Mining (NAICS 21) in the United States [IPUBN21W201000000], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/IPUBN21W201000000, May 16, 2022.