Adrodd fel Amhriodol

Testun Gwreiddiol (Anodiad: EPW010149 / 1350911)

' Blast furnaces. This group was confusingly named after Bessemer, and by 1956 limited to produce speigeleisen , etc for use in refining steel from the OH furnaces '

Dywedwch wrthym pam mae’r cynnwys hwn yn amhriodol *(gofynnol)

Dewis categori *(gofynnol)

Os ‘Arall’ rhowch fanylion (dewisol)

Eich enw (dewisol)

Eich cyfeiriad e-bost (dewisol)

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