GB746841A
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Improvements in iron recovery
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GB762469A
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Process for the production of ferromanganese
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GB741844A
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Improvements in iron recovery
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GB745001A
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Improvements in iron recovery
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GB747496A
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Improvements in ferrochromium recovery
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GB666628A
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Production of calcium chromate
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GB666627A
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Process for the production of calcium chromate
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GB666466A
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Production of calcium chromate
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GB656146A
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Improvements in treating iron-bearing materials
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GB656144A
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Improvements in metallurgy
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GB656142A
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Improvements in metallurgy
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GB656143A
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Improvements in metallurgy
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GB656140A
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Improvements in the recovery of sulphur as hydrogen sulphide from iron-sulphide bearing material
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GB656145A
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Improvements in sulphur recovery
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GB656147A
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Improvements in sulphur recovery
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GB656141A
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Improvements in metallurgy
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GB618467A
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Improvements in metallurgy
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GB599073A
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Improvements in sulphur recovery
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GB578136A
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Improvements in sulphur recovery
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GB574598A
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Improvements in and connected with the production of sound metal castings
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