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| Braai plume (1) |
| Gaseous elemental mercury (1) |
| Hexavalent chromium (1) |
| Inorganic ions (1) |
| Trace metals (1) |
| Welgegund atmospheric measurement site (1) |
| Braai plume (1) |
| Gaseous elemental mercury (1) |
| Hexavalent chromium (1) |
| Inorganic ions (1) |
| Trace metals (1) |
| Welgegund atmospheric measurement site (1) |