Tredegar Company, The - One of the South Wales Coalfield's 'Big Three'

Yn ystod y 19eg ganrif, roedd gwaith haearn Tredegar yn weithredol ym mlaenau Cwm Sirhywi. Roedd yn cyflenwi haearn rheilffordd i weddill y byd. Dewisodd Isambard Kingdom Brunel lo Tredegar i yrru ei long ager arloesol, y 'Great Western', ac yn dilyn 1840, datblygodd oes aur gwerthu glo i yrru injanau stêm. Cofnod darluniadol o'r hanes.

In the 19th century the South Wales Tredegar ironworks operated at the head of the Sirhowy Valley. During the Railway Age, the works supplied iron rail to the world. Isambard Kingdom Brunel selected 'Tredegar coal' to power his pioneering steam ship Great Western and after 1840 the company's sale of steam coal boomed. An illustrated historical record.