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open-hearth

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American Heritage Dictionary:

o·pen-hearth

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open-hearth
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open-hearth

A. gas and air enter
B. pre-heated chamber
C. molten pig iron
D. hearth
E. heating chamber (cold)
F. gas and air exit
(Precision Graphics)
(ō'pən-härth')
adj.
  1. Designating or being a reverberatory furnace used in the production of high-quality steel.
  2. Of or relating to the steel produced in such a furnace.

Oxford Dictionary of Architecture & Landscaping:

open hearth

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Hearth, usually sited clear of the walls, without a chimney-stack or hood above it, therefore requiring a femerall, lantern, or louvre on the roof.

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American Heritage Dictionary The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved. Read more
Cite
Oxford Dictionary of Architecture & Landscaping A Dictionary of Architecture and Landscape Architecture. Copyright © 1999, 2006 by Oxford University Press. All rights reserved. Read more

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