GB379268A
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Improvements in or relating to refractory materials and to methods of making the same
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US1746945A
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Recovering metals
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US1746944A
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Process of cement manufacture
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DE581575C
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Furnace for burning alkaline earth carbonates
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DE548896C
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Process for burning tiny carbonates of the alkaline earth
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GB269480A
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Improvements in or relating to methods of and apparatus for treating materials
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GB275463A
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Improvements in or relating to the treatment of carbonate materials
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GB264450A
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Improvements in or relating to sintering machines
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US1810313A
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Process of and apparatus for heat treating alkaline earth carbonate and other materials
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GB161491A
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Improvements in and connected with ore sintering mechanisms
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CA280181A
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Heat treating apparatus
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CA281295A
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Earthy mineral processing
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CA284764A
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Earthy material processing
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