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Tapping the cupola. There's a passage in the chamber's internal refractory lining, blocked by a wad of fireclay, or a similar material.
When the charge is ready, the dam is chipped out with a bar, and the iron allowed to pour into the ladle.
Note the "sluice" is also lined with refractory.





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quickest, safest, or even the correct ones. It's up to you to know how to use your own machines and tools.
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