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| Sub-Chapter | 2005 | 2006 | 2007 | 2008 |
| Tungsten (wolfram) and articles thereof, including waste and scrap. | | | $1,185 | |
| Molybdenum and articles thereof, including waste and scrap. | | $15 | | |
| Tantalum and articles thereof, including waste and scrap. | | | | $479 |
| Magnesium and articles thereof, including waste and scrap. | $7,206 | $18,686 | $20,877 | |
| Manganese and articles thereof, including waste and scrap. | | $51 | | |
| Total | $7,206 | $18,752 | $22,062 | $479 |
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