Rachel Carson Homestead

Springdale is a borough in northeastern Allegheny County, Pennsylvania, United States, 18 miles (29 km) northeast of Pittsburgh along the Allegheny River. The population was 3,400 at the 2020 census. The borough became official in 1906, after breaking away from the township.

Riddle Run is a tributary of the Allegheny River located in Allegheny County in the U.S. state of Pennsylvania.

Springdale Township is a township in Allegheny County, Pennsylvania, United States. It contains the two communities of Orrville and Harwick. The population was 1,636 at the 2010 census.

Cheswick is a borough in Allegheny County, Pennsylvania, United States, along the Allegheny River. The population was 1,672 as of the 2020 census. Cheswick Borough was incorporated in 1902. It is a residential suburb of the Pittsburgh metropolitan area.

The Logans Ferry Mine Tunnel consists of a pair of abandoned coal tunnels under the Allegheny River between Plum and Springdale, Pennsylvania in the United States.

Logans Ferry Powder Works Historic District is a historic district in Plum, Pennsylvania. These powder works were started in 1918, and they produced explosive bronze-aluminum powder for use in fireworks and other explosives and pigments for Alcoa. The works were listed on the National Register of Historic Places on May 7, 1998. the plant was being dismantled as of 3/6/2015

The C.L. Schmitt Bridge (commonly known as the New Kensington Bridge or the Ninth Street Bridge) is a truss bridge that carries vehicular traffic across the Allegheny River between New Kensington and East Deer Township, Pennsylvania in the United States.

Pucketa Creek is a tributary of the Allegheny River located in both Allegheny and Westmoreland counties in the U.S. state of Pennsylvania.

C.W. Bill Young Lock and Dam (formerly known as Allegheny River Lock and Dam No. 3) in Harmar Township, Allegheny County, Pennsylvania, and Plum, Pennsylvania, is a lock that was built in 1932. The lock and fixed-crest dam were built by the U.S. Army Corps of Engineers as a part of an extensive system of locks and dams to improve navigation along the Allegheny River. C.W. Bill Young Lock and Dam is located about 14.5 Miles up the Allegheny River from the Point in Downtown Pittsburgh. Upriver, the pool has an average water elevation of 734.5 feet above sea level and extends about 9.7 miles upriver to Allegheny River Lock and Dam No. 4. Downriver, Allegheny Pool No. 2 has an average water elevation of 721 feet above sea level and extends about 7.8 miles downriver to Allegheny River Lock and Dam No. 2. Thus Lock No. 3 lifts and lowers boats about 13.5 feet between the pools.The site has six contributing structures, the dam, the lock, an esplanade, the operations building, a gauging station, and a lockkeepers house.Two 2-story frame lockkeepers houses for the former lock and dam structures were constructed about 1907, with the older house at 301 Barking Road surviving.The site was listed on the National Register of Historic Places on April 21, 2000.

The Harwick Mine disaster was a mining accident on January 25, 1904 in Cheswick, Pennsylvania, some sixteen mi (26 km) east of Pittsburgh in the western part of the state. The blast killed an estimated 179 miners and 2 aid workers. The disaster ranks among the ten worst coal mining disasters in American history. One community especially impacted was the Hungarian community in Homestead, Pennsylvania. Fifty-eight of the members of the First Hungarian Reformed Church of Homestead—a full third of the congregation—died in the explosion. Coal was mined by compressed-air machine, blasted down with dynamite. Ice accumulation in the air shaft restricted ventilation which caused a buildup of methane gas. At 8:15 am, workers blasted down dynamite which ignited the methane. Coal dust suspended in the air assisted the explosion in traveling throughout every region of the mine. In addition to interior devastation, the force was so powerful that it wrecked the exterior of the shaft. Of 175 mine workers underground at the time, the single survivor was the severely burned 16-year-old Adolph Gunia. Other casualties included Daniel A. Lyle and the mine engineer Selwyn M. Taylor, who both gave their lives in rescue attempts after responding to the scene. Greatly touched by Taylor's and Lyle's sacrifice, Andrew Carnegie had medals privately minted for their families, and within two months had established a $5 million Carnegie Hero Fund as a result. The mine was owned by the Allegheny Coal Company.

The New Kensington Production Works Historic District, also known as the New Kensington Works and Arnold Works, is a national historic district that is located in New Kensington, Westmoreland County, Pennsylvania. It was added to the National Register of Historic Places in 1998.

Harwick is a census-designated place (CDP) in Allegheny County, Pennsylvania, United States, and is located within Springdale Township. As of the 2020 census, it had a population of 850.