Miah Maull Shoal Lighthouse
- Vicinity: Delaware Bay, 5 mi SW of Egg Island Point
The Miah Maull Shoal Lighthouse is a well-preserved embodiment of the cast-iron and concrete caisson foundation technology which was used from 1876 to 1913 in lighthouses that occupied waterbound sites in the northeastern United States. At least 50 such lighthouses were built. Miah Maull Shoal, designed in 1907 and completed in 1913, was the last example of this type built before reinforced concrete technology was introduced; it was also one of the last major navigational aids built in the Delaware Bay. As part of a string of lighthouses in the bay and the lower Delaware River that were in place before World War One, Miah Maull Shoal helped foster the improved navigation of the Delaware that was crucial to the success of the Hog Island Shipyard (now the site of the Philadelphia International Airport), which was established in 1917. By the end of the conflict, Hog Island had become the largest shipyard in the world. - NRHP, 30 July 1990