|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Vermiculite, perlite & chlorites, unexpanded | $2,937,000 | $3,450,000 | $4,134,000 | $3,765,000 | $2,696,000 | $4,076,000 | $4,645,000 |
| Kieserite, epsomite (nat. magnesium sulphates) | $2,000 | | $3,000 | $97,000 | $205,000 | $129,000 | $88,000 |
| Mineral subs., n.e.s. in Ch.25 | $2,053,000 | $1,432,000 | $1,147,000 | $1,623,000 | $2,872,000 | $3,772,000 | $4,210,000 |
| Total | $4,992,000 | $4,882,000 | $5,284,000 | $5,485,000 | $5,773,000 | $7,977,000 | $8,943,000 |
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