Cupola Foundry Furnace Iron Melting Small

In 1850, Harrisburg, Pennsylvania, was a community like many others in the U.S., employing most of its citizens in trade and commerce. Unlike its larger neighbors, Pittsburgh and Philadelphia, Harrisburg had not yet experienced firsthand the Industrial Revolution. Within a decade, however, Harrisburg boasted a cotton textile mill, two blast furnaces and several iron rolling mills, a railroad car manufactory, and a machinery plant. This burst of industrial activity naturally left its mark on the community, but within two generations most industry had left Harrisburg, and its economic base was shifting toward white-collar governmental administration and services. Harrisburg Industrializes looks at this critical episode in Harrisburg's history to discover how the coming of the factory system affected the life of the community. Eggert begins with the earliest years of Harrisburg, describing its transformation from a frontier town to a small commercial and artisanal community. He identifies the early entrepreneurs who built the banking, commercial, and transportation infrastructure, which would provide the basis for industry at mid-century. Eggert then reconstructs the development of the principal manufacturing firms from their foundings, through the expansive post-Civil War era, to the onset of deindustrialization near the end of the century. Through census and company records, he is able to follow the next generation of craftsmen and entrepreneurs as well as the new industrial workers - many of them minorities - who came to the city after 1850. Eggert sees Harrisburg's experience with the factory system as "second-stage", or imitative, industrialization, which was typical of many, if notmost, communities that developed factory production.

Cornwall Iron Furnace, in Cornwall, Pennsylvania, is a charcoal ironmaking facility that operated from 1742 to 1883. The surviving stone furnace, steam-powered air-blast machinery, and related buildings were once the nucleus of a huge industrial plantation, which produced pig iron and domestic products and, during the Revolution and Civil War, cannon barrels.

Basic oxygen furnace - Italic textThe basic oxygen furnace is the place within a foundry where molten iron from the blast furnace is changed into liquid steel. The vast majority of steel manufactured in the world is produced using the basic oxygen furnace.

Electric arc furnace - An electric arc furnace is a system that heats the charged material by means of an electric arc. Arc furnaces range in size from small units of approximately one ton capacity used in foundries for producing cast iron products, up to about 400 ton units used for secondary steelmaking.

Open hearth furnace - Open hearth furnaces, also known as Catalan forges, are the furnaces where excess carbon and other impurities are burnt out of pig iron to produce steel. Since steel is difficult to manufacture due to its high melting point, normal fuels and furnaces were insufficient and the open hearth furnace was developed to overcome this difficulty.

Puddling furnace - The puddling furnace is a metalmaking technology to create wrought iron from the pig iron produced in a blast furnace. Pig iron contains high amounts of carbon and other impurities, making it brittle.

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