Soon afterward the United Pipe Line Company went under their control. In 1877 the Empire Transportation Company, a large pipe line and refining corporation which the Pennsylvania Railroad had controlled for many years, became a Standard subsidiary. Meanwhile certain hardy spirits in the oil regions had conceived a much more ambitious plan. Why not build great underground mains directly from the oil regions to the seaboard, pump the crude oil directly to the city refineries, and thus free themselves from dependence on the railroads? At first the idea of pumping oil through pipes over the Alleghany Mountains seemed grotesque, but competent engineers gave their indorsement to the plan. A certain "Dr." Hostetter built for the Columbia Conduit Company a trunk pipe line that extended thirty miles from the oil regions to Pittsburgh. Hardly had Hostetter completed his splendid project when the Standard Oil capitalists quietly appeared and purchased it! For four years another group struggled with an even more ambitious scheme, the construction of a conduit, five hundred miles long, from the oil regions to Baltimore. The American people looked on admiringly at the splendid enterprise whose projectors, led by General Haupt, the builder of the Hoosac Tunnel, struggled against bankruptcy, strikes, railroad opposition, and hostile legislatures, in their attempts to push their pipe line to the sea. In 1879 the Tidewater Company first began to pump their oil, and the American press hailed their achievement as something that ranked with the laying of the Atlantic Cable and the construction of the Brooklyn Bridge. But in less than two years the Rockefeller interest had entered into agreements with the Tidewater Company that practically placed this great seaboard pipe line in its hands.