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US1881117A
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Rotary drum furnace for melting metals
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GB344980A
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Drum furnace for melting metals
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GB331791A
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Method and apparatus for melting down easily fusible and easily oxidisable metals and alloys
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GB306141A
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Process for the production of cast iron containing little gas or oxides
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US1807468A
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Process and device for the production of iron-alloys free from gases, especially oxygen
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US1797125A
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Method of smelting metal
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GB283381A
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Improvements in processes and apparatus for heating smelting furnaces
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