Commodity2005200620072008200920102011
Worked slate & arts. of slate/agglom. slate$2,830,034$3,969,887$3,754,165$4,388,996$3,301,442$4,505,798$5,693,081
Total$2,830,034$3,969,887$3,754,165$4,388,996$3,301,442$4,505,798$5,693,081