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Updated: May 18, 2025
Mushet's lifelong labours, the following may be summarily mentioned: The preparation of steel from bar-iron by a direct process, combining the iron with carbon; the discovery of the beneficial effects of oxide of manganese on iron and steel; the use of oxides of iron in the puddling-furnace in various modes of appliance; the production of pig-iron from the blast-furnace, suitable for puddling, without the intervention of the refinery; and the application of the hot blast to anthracite coal in iron-smelting.
These rolls, when they are driven by steam, obtain this generally from a boiler placed over the heating-or puddling-furnace, and heated by the waste gases from the furnace. This arrangement was first made by John Griffin, the superintendent of the Phoenix Iron-works, under whose direction the first rolled iron beams over nine inches thick that were ever made were produced at these works.
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