Mae'r cynnwys hwn ar gael yn Saesneg yn unig.
Professor David Blackaby interviewed by ITV Wales News at 6 and later in the evening by ITV News Cymru Wales on the Tata Steel ballot result on pensions and the future of the steel industry.
Sefydliad Ymchwil Cymdeithasol ac Economaidd a Data Cymru
Mae'r cynnwys hwn ar gael yn Saesneg yn unig.
Professor David Blackaby interviewed by ITV Wales News at 6 and later in the evening by ITV News Cymru Wales on the Tata Steel ballot result on pensions and the future of the steel industry.