USCGS 12-Mile Circle Mile 19.5, 1893, Delaware-Pennsylvania - U.S. Historic Survey Stones and Monuments on Waymarking.com

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In 1892, W.C. Hodgkins, Office of the U. S. Coast and Geodetic Survey, was contracted by a joint commission to survey and monument the Delaware-Pennsylvania boundary. Hodgkins extended the northern boundary of Maryland eastward across the top of the Wedge to the 12-mile Circle. This created the Top of the Wedge Line. Hodgkins then marked the 12-mile Circle every half-mile. Including the initial point and a terminal point there are 46 monuments. The initial and terminal stones are made of dark gneiss of the Wilmington Complex and bear the names of the commissioners representing Pennsylvania and Delaware. The rest of the stones are pryamidic frustums of gray gneiss monuments, 10 inches square at the top and projecting from 2 to 30 inches above the ground. The half-mile stones bear a "1/2" on their west side . The mile stones bear a "P" on the north face, a "D" on the south face, the mile number from the initial stone on the west face, and the date 1892 on the east face.

Monumentation Type: Dressed stone Monument Category: State boundary marker Accessible to general public: yes Historical significance: See above Monument Website: [Web Link] County: New Castle Approximate date of monument: 04/15/1893 Monumentation Type (if other): Not listed Monument Category (if other): Not listed Explain Non-Public access: Not listed USGS Quad: Not listed NGS PID: Not listed Other Coordinates: Not Listed Other Coordinates details: Not listed

Visit Instructions:
1. A closeup photo of the monument is required.
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2. A 'distant' photo including the monument in the view is highly recommended. Include the compass direction you faced when you took the picture.

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