<Tr> <Th> Elevation </Th> <Td> 304 m (997 ft) </Td> </Tr> <Tr> <Th_colspan="2"> Population (2011) </Th> </Tr> <Tr> <Th> Total </Th> <Td> 221,875 </Td> </Tr> <Tr> <Th> Density </Th> <Td> 350 / km (900 / sq mi) </Td> </Tr>

Katni famous for which of the following industries