In 1822, the two companies merged as the Lehigh Coal & Navigation Company (LC&N), and by 1824 the company was shipping large volumes of coal down the Lehigh and Delaware Canals. Meanwhile, three brothers had similar ideas from near the turn of the century, and about the same time began mining coal in Carbondale, northeast of Scranton, but high enough to run a gravity railroad to the Delaware River and feed New York City via the Delaware and Hudson Canal. Pennsylvania began the Delaware Canal to connect the Lehigh Canal to Philadelphia and environs, while funding to build a canal across the Appalachians' Allegheny Mountains to Pittsburgh. In 1827, LC&N built the second railroad in the country, a gravity railroad from Mauch Chunk Switchback Railway, running Summit Hill to Mauch Chunk.