However, its initial problem became Lincoln's first Secretary of War, Simon Cameron, a major stockholder in the rival North Central Railroad, which received long haul freight destined for Baltimore from the rival Pennsylvania Railroad. Furthermore, the Pennsylvania Railroad and other investors sought permission to construct rail lines which threatened the B&O's monopolies on the Washington Branch (between Relay and Washington DC) and westward through Cumberland, Maryland. Raids and battles during the war also cost the B&O substantial losses, many never indemnified. Master of Transportation Prescott Smith kept a diary during the war years, describing incidents such as the June 1861 derailment of a 50 car coal train, which plunged into a ravine after a bridge was destroyed (the wreckage burned for months and melted the metal coal hoppers), as well as later ironclad trains (one only disabled by an artillery shell piercing the boiler).