Producer Price Index by Industry: Mining Machinery and Equipment Manufacturing: Underground Mining Machinery (Except Parts Sold Separately) (PCU33313133313121)

U.S. Bureau of Labor Statistics, Producer Price Index by Industry: Mining Machinery and Equipment Manufacturing: Underground Mining Machinery (Except Parts Sold Separately) [PCU33313133313121], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/PCU33313133313121, .