Schuylkill to develop the waterpower sites along its waterways into early industrial parks. By 1840, the Abbott Street area near Lock 47, now part of Easton's Hugh Moore Park, employed over 1,000 men in almost a dozen factories. This fostered the industries of Allentown, Bethlehem, and their products and the connection with the Delaware Canal, managed for the state by the company after 1834<ref, the development of the Industrial Revolution of greater Philadelphia. Upper Lehigh Canal With rights of eminent domain granted by the 1837 revisions to the Main Line of Public Works legislation, the Lower Lehigh Navigation was extended upriver another (the Upper Lehigh Canal) through the Lehigh Gorge from Jim Thorpe to White Haven and completed in 1843, giving it the largest carrying capacity of any U.S. canal. Lehigh and Susquehanna Railroad With a unified legislative and executive push, the company spun off a subsidiary to build a railroad connection to the Susquehanna at Pittston just north of Wilkes-Barre over very rough terrain. The multi-modal project used a cable railroad called the Ashley Planes, and double-tracked connecting trackage from its foot at Ashley to the barge docks of Pittston and eventually linked up with the seven first-class railroads that drove spurs into the valley to haul anthracite. The Ashley Planes summit end connected to an assembly yard at Mountain Top, Pennsylvania, and sourced a steep double-tracked rail branch to White Haven where it had loading docks with a meeting of transport technologies feeding a new extension of its Lehigh Canal through the difficult terrain of the Lehigh Gorge. With the political push to connect Philadelphia and the Delaware River to the Northern Coal Fields in the Wyoming Valley and the Susquehanna River, the company formed the Lehigh and Susquehanna Railroad empowered with rights of eminent domain. Eventually, both the LC&N Company's Lehigh Navigation and the L&SRR were extended upriver through the Lehigh Gorge from Jim Thorpe to White Haven. Other railroads By the later 1820s through the mid-1830s, the civic and business leaders of Pennsylvania, Delaware, and southern New Jersey were anxious to connect their young factories with the markets of the trans-Appalachian territories being settled by tens of thousands of westward migrants. To compete with the B&O Railroad and Erie Canal, they launched the Main Line of Public Works to benefit the manufacturers of the Delaware Valley region. The company built a succession of small but influential