<Tr> <Td> 2015 </Td> <Td> 896 </Td> <Td> 63 </Td> <Td> 833 </Td> </Tr> <Tr> <Td> 2016 </Td> <Td> 738.7 </Td> <Td> 50.5 </Td> <Td> 688 </Td> </Tr> <P> 1 short ton = 0.907184 metric tonnes </P> <Table> <Tr> <Td> </Td> <Td> This section needs to be updated . Please update this article to reflect recent events or newly available information . (January 2016) </Td> </Tr> </Table>

Most of the coal mined in the eastern united states is associated with what system