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- The Survey17
- Dept. of the Interior, U.S. Geological Survey12
- U.S. Geological Survey9
- Mineral Development Division, Department of Mines and Energy5
- Alberta Environment : Alberta Research Council1
- Asarco Inc. ; Abitibi-Price Inc1
- Bureau de recherches géologiques et minières1
- Goddard Space Flight Center1
- Interior-Geological Survey1
- Mineral Development Division1
- Mineral Development Division, Department of Mines and Energy, Government of Newfoundland and Labrador1
- The Division1
- Utah Geological and Mineral Survey1
