Goldsboro, Pennsylvania

The Goldsboro Historic District is a national historic district that is located in Goldsboro in York County, Pennsylvania in the United States. It was listed on the National Register of Historic Places in 1984.

The Three Mile Island accident was a partial nuclear meltdown of the Unit 2 reactor (TMI-2) of the Three Mile Island Nuclear Generating Station on the Susquehanna River in Londonderry Township, near the capital city of Harrisburg, Pennsylvania. The reactor accident began at 4:00 a.m. on March 28, 1979, and released radioactive gases and radioactive iodine into the environment. It is the worst accident in U.S. commercial nuclear power plant history. On the seven-point logarithmic International Nuclear Event Scale, the TMI-2 reactor accident is rated Level 5, an "Accident with Wider Consequences".The accident began with failures in the non-nuclear secondary system followed by a stuck-open pilot-operated relief valve (PORV) in the primary system that allowed large amounts of water to escape from the pressurized isolated coolant loop. The mechanical failures were compounded by the initial failure of plant operators to recognize the situation as a loss-of-coolant accident (LOCA). TMI training and operating procedures left operators and management ill-prepared for the deteriorating situation caused by the LOCA. During the accident, those inadequacies were compounded by design flaws, such as poor control design, the use of multiple, similar alarms, and a failure of the equipment to clearly indicate either the coolant-inventory level or the position of the stuck-open PORV.The accident crystallized anti-nuclear safety concerns among activists and the general public, and led to new regulations for the nuclear industry. It accelerated the decline of efforts to build new reactors.Anti-nuclear movement activists expressed worries about regional health effects from the accident. Some epidemiological studies analyzing the rate of cancer in and around the area since the accident did determine that there was a statistically significant increase in the rate of cancer, while other studies did not. Due to the nature of such studies, a causal connection linking the accident with cancer is difficult to prove.Cleanup at TMI-2 started in August 1979 and officially ended in December 1993, with a total cost of about $1 billion (equivalent to $2 billion in 2022). TMI-1 was restarted in 1985, then retired in 2019 due to operating losses. Its decommissioning is expected to be complete in 2079 at an estimated cost of $1.2 billion.

Three Mile Island Nuclear Generating Station (commonly abbreviated as TMI) is a closed nuclear power plant on Three Mile Island in Londonderry Township, Dauphin County, Pennsylvania on Lake Frederic, a reservoir in the Susquehanna River just south of Harrisburg. It has two separate units, TMI-1 (owned by Constellation Energy) and TMI-2 (owned by EnergySolutions).The plant was the site of the most significant accident in United States commercial nuclear energy when, on March 28, 1979, TMI-2 suffered a partial meltdown. According to the Nuclear Regulatory Commission (NRC) report, the accident resulted in no deaths or injuries to plant workers or in nearby communities. Follow-up epidemiology studies did not find causality between the accident and any increase in cancers. One work-related death has occurred on-site during decommissioning.The reactor core of TMI-2 has since been removed from the site, but the site has not been fully decommissioned. In July 1998, Amergen Energy (now Exelon Generation) agreed to purchase TMI-1 from General Public Utilities for $100 million.The plant was originally built by General Public Utilities Corporation, later renamed GPU Incorporated. The plant was operated by Metropolitan Edison Company (Met-Ed), a subsidiary of the GPU Energy division. In 2001, GPU Inc. merged with FirstEnergy Corporation. On December 18, 2020 - FirstEnergy transferred Unit 2's license over to EnergySolutions' subsidiary TMI-2 Solutions after receiving approval from the NRC.Exelon was operating Unit 1 at a financial loss since 2015. In 2017 the company said it would consider ceasing operations at Unit 1 because of high costs unless there was action from the Pennsylvania government. Unit 1 officially shut down at noon on September 20, 2019.Unit 1 decommissioning is expected to be completed in 2079 and will cost $1.2 billion. Unit 2, which has been dormant since the accident in 1979, is expected to close in 2052.

Cly is an unincorporated community in Newberry Township, York County, Pennsylvania, United States. Cly is located on Cly Road Route 262, between York Haven and Goldsboro on the Susquehanna River.

Swatara Creek (nicknamed the Swatty) is a 72-mile-long (116 km) tributary of the Susquehanna River in east-central Pennsylvania in the United States. It rises in the Appalachian Mountains in central Schuylkill County and passes through northwest Lebanon County before draining into the Susquehanna at Middletown in Dauphin County. The name "Swatara" is said to derive from a Susquehannock word, Swahadowry or Schaha-dawa, which means "where we feed on eels".

Spades Wharf Island is a small island in the Susquehanna River in Lower Swatara Township, Pennsylvania, near Highspire, Pennsylvania. Near the Harrisburg International Airport, the island itself is part of the Pennsylvania State Game Lands and is known for its small shape.

Harrisburg International Airport (IATA: MDT, ICAO: KMDT, FAA LID: MDT) is a public airport in Middletown, Pennsylvania, United States, nine miles (15 km) southeast of Harrisburg. It is owned by the Susquehanna Area Regional Airport Authority.The airport code MDT refers to Middletown, the town in which the airport is located. Planes landing at MDT from the south are often routed near Three Mile Island Nuclear Generating Station a few miles from the airport. The airport, frequently referred to as HIA, is the primary commercial airport in South Central Pennsylvania and is the third-busiest airport in Pennsylvania for passenger enplanements and cargo shipments behind Philadelphia International Airport and Pittsburgh International Airport.

Royalton is a borough in Dauphin County, Pennsylvania, United States. As of the 2020 census the borough population was 1,134.It is part of the Harrisburg–Carlisle Metropolitan Statistical Area. It shares its ZIP code with neighboring Middletown.

Swatara Ferry House, also known as "Old Fort," is a historic home located at Middletown, Dauphin County, Pennsylvania. It is a 1+1⁄2-story log building with a full stone foundation and cellar, built in two sections. It is believed to date to about 1820. It was added to the National Register of Historic Places in 1976.

Falmouth is an unincorporated community and census-designated place (CDP) in Conoy Township, Lancaster County, Pennsylvania, United States. As of the 2010 census the population was 420.

Harrisburg Air National Guard Base is a United States Air Force base, located at Harrisburg International Airport, (IATA: MDT, ICAO: KMDT, FAA LID: MDT) Pennsylvania. It is located 1.7 miles (2.7 km) west-southwest of Middletown, Pennsylvania. The Pennsylvania Air National Guard facility is sited on the location of the former Olmsted Air Force Base, which was closed in 1969. The 193d Special Operations Wing operates Lockheed Martin MC-130J Commando Solo II aircraft. Today the airfield is split between civilian activities, Harrisburg IAP (MDT) and military activities, which now carry the Harrisburg ANGB title. After Olmsted AFB closed in 1970 major civilian air activities moved from Capital City Airport, near Harrisburg over to the former Olmsted site.

Middletown station is an Amtrak train station on the Keystone Corridor in Middletown, Dauphin County in the U.S. state of Pennsylvania. The station is served by Amtrak's Keystone Service between New York City and Harrisburg. The former low-level station was built in 1990, but a relocated station with a high-level platform opened on January 10, 2022.