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19th century. In 1810, 350 tons of anthracite was mined in Pennsylvania. The use of anthracite coal was restricted due to the difficulties in transporting it efficiently, and the industry was still small and undeveloped. [14] The War of 1812 against Great Britain increased the usage of anthracite coal.
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Originally, Section 612 was limited by ozone-depleting chemicals. However, after passing regulations to phase-out R134a, an HFC refrigerant with no ozone-depleting potential, this phase-out was defended by a subsidiary of DuPont siding with the EPA as it was challenged by a major manufacturer of R134a, and was struck down in 2017. This decision ...
The Marcellus natural gas trend is a large geographic area of prolific shale gas extraction from the Marcellus Shale or Marcellus Formation, of Devonian age, in the eastern United States. [ 2 ] The shale play encompasses 104,000 square miles and stretches across Pennsylvania and West Virginia, and into eastern Ohio and western New York. [ 3 ]
The Pennsylvania State University, commonly referred to as Penn State and sometimes by the acronym PSU, is a public state-related land-grant research university with campuses and facilities throughout Pennsylvania, United States. Founded in 1855 as Farmers' High School of Pennsylvania, [ 13 ] Penn State was named the state's first land-grant ...
Location. Roebling's Delaware Aqueduct, also known as the Roebling Bridge, is the oldest existing wire suspension bridge in the United States. [ 1 ] It runs 535 feet (163 meters) over the Delaware River, from Minisink Ford, New York, to Lackawaxen, Pennsylvania. Opened in 1849 as an aqueduct connecting two parts of the Delaware & Hudson Canal ...
Capital Airlines was a United States trunk carrier, a scheduled airline serving the eastern, southern, southeastern, and midwestern United States.Capital's headquarters were located at Washington National Airport (now Reagan Washington National Airport) across the Potomac river from Washington, D.C., where crew training and aircraft overhauls were also accomplished. [2]
On July 20, 1868, Secretary of State William H. Seward certified that if withdrawals of ratification by New Jersey and Ohio were illegitimate, then the amendment had become part of the Constitution on July 9, 1868, with ratification by South Carolina as the 28th state. [310]