Commodity2005200620072008200920102011
Worked slate & arts. of slate/agglom. slate$1,518,198$2,368,061$2,541,662$3,096,722$3,056,783$3,409,331$2,350,727
Total$1,518,198$2,368,061$2,541,662$3,096,722$3,056,783$3,409,331$2,350,727