TY  - RPRT
TI  - Historical statistics for mineral and material commodities in the United States
AU  - Thomas Kelly
AU  - Grecia R. Matos
AU  - David A. Buckingham
AU  - Carl A. DiFrancesco
AU  - Kenneth E. Porter
AU  - Cyrus Berry
AU  - Melissa Crane
AU  - Thomas Goonan
AU  - John Sznopek
PY  - 2005
DO  - 10.3133/ds140
UR  - https://pubs.usgs.gov/publication/ds140
ID  - ds140
ER  -