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  2. Otter Creek (Susquehanna River tributary) - Wikipedia

    en.wikipedia.org/wiki/Otter_Creek_(Susquehanna...

    Otter Creek is a 11.2-mile-long (18.0 km) [1] tributary of the Susquehanna River in York County, Pennsylvania in the United States. [2] Otter Creek joins the Susquehanna between Shenks Ferry and York Furnace. Established through a cooperative effort involving various stakeholders, the Otter Creek Nature Preserve is a crucial part of the PPL ...

  3. Johnson Controls - Wikipedia

    en.wikipedia.org/wiki/Johnson_Controls

    York International is the final name of a company started in York, Pennsylvania, US, in 1874, which developed the York brand of refrigeration and HVAC equipment. [74] The York brand has been owned since August 2005 by Johnson Controls, when it was sold to them for $3.2 billion. [75] [76] At the time of the acquisition, it was the world's ...

  4. Codorus Forge and Furnace Historic District - Wikipedia

    en.wikipedia.org/wiki/Codorus_Forge_and_Furnace...

    Codorus Forge and Furnace Historic District, also known as Hellem (Hellam) Forge, is a historic iron forge and national historic district located at Hellam Township in York County, Pennsylvania. The district includes four contributing buildings, one contributing site, and one contributing structure.

  5. Annual fuel utilization efficiency - Wikipedia

    en.wikipedia.org/wiki/Annual_fuel_utilization...

    The annual fuel utilization efficiency (AFUE; pronounced 'A'-'Few' or 'A'-'F'-'U'-'E') is a thermal efficiency measure of space-heating furnaces and boilers.The AFUE differs from the true 'thermal efficiency' in that it is not a steady-state, peak measure of conversion efficiency, but instead attempts to represent the actual, season-long, average efficiency of that piece of equipment ...

  6. History of the iron and steel industry in the United States

    en.wikipedia.org/wiki/History_of_the_iron_and...

    By 1776, up to 80 iron furnaces throughout the American colonies were producing about as much iron as Britain itself. If one estimate of 30,000 tons of iron each year is accurate, then the newly formed United States was the world's third-largest iron producer, after Sweden and Russia. Notable pre-19th-century iron furnaces in the US

  7. Willis Carrier - Wikipedia

    en.wikipedia.org/wiki/Willis_Carrier

    The company became one of the largest employers in central New York. Carrier's igloo-shaped pavilion [10] in the 1939 New York World's Fair gave visitors a glimpse into the future of air conditioning, but before it became popular, World War II began. During the post-war economic boom of the 1950s, air conditioning began its tremendous growth in ...