▁was ▁declared ▁by ▁the ▁C & W ▁the ▁fier c est ▁critic ▁of ▁the ▁influence ▁of ▁the ▁' co al ▁interest ' ▁was ▁of ▁his ▁own ▁opinion ▁still , ▁but ▁willing ▁to ▁let ▁by g ones ▁be ▁by g ones . ▁( Non eth eless , ▁there ▁were ▁ran cor ous ▁ex changes ▁at ▁a ▁share hold ers ' ▁meeting ▁in ▁ 1 8 6 3 ▁when ▁two ▁non - co al ▁direct ors ▁were ▁elected ▁to ▁the ▁board ▁by ▁the ▁exercise ▁of ▁pro x ies .) ▁ ▁All ▁engines ▁were ▁converted ▁to ▁coal - burn ing ▁at ▁the ▁end ▁of ▁ 1 8 5 8 . ▁In ▁response ▁to ▁the ▁ 1 8 5 7 ▁accident , ▁track ▁on ▁brid ges ▁was ▁rela id ▁with ▁bridge ▁rails , ▁and ▁it ▁was ▁decided ▁to ▁re build ▁brid ges ▁as ▁stone - and - ir on ▁structures ▁as ▁funds ▁permitted . ▁The ▁total ▁cost ▁of ▁replacing ▁all ▁the ▁brid ges ▁was ▁initially ▁estimated ▁as ▁£ 6 , 0 0 0 ▁to ▁£ 6 , 5 0 0 ; ▁but ▁the ▁final ▁cost ▁was ▁about ▁three ▁times ▁this , ▁most ▁of ▁which ▁was ▁borrow ed ▁against ▁personal ▁guarante es ▁by ▁the ▁direct ors ; ▁the ▁C W ▁then ▁raised ▁the ▁money ▁by ▁the ▁issue ▁of ▁additional ▁shares , ▁author ised ▁by ▁an ▁Act ▁of ▁Parliament ▁which ▁also ▁author ised ▁connection ▁to ▁Lord ▁L ons dale ' s ▁dock ▁at ▁Work ington , ▁and ▁construction ▁of ▁a ▁number ▁of ▁passing ▁loops . ▁ ▁Im pro ved