<Tr> <Th_colspan="2"> Technical information </Th> </Tr> <Tr> <Th> Length </Th> <Td> 468 km (291 mi) </Td> </Tr> <Tr> <Th> Diameter </Th> <Td> 36 in (914 mm) </Td> </Tr> <Tr> <Th> No. of pumping stations </Th> <Td> </Td> </Tr>

When is the keystone pipeline going to start