Last month Tata announced it would proceed with its plans to close its two blast furnaces at Port Talbot, to be replaced in the coming years with an electric arc furnace.
Fis diwethaf cyhoeddodd Tata y byddai'n bwrw ymlaen â'i gynlluniau i gau ei ddwy ffwrnais chwyth ym Mhort Talbot, i'w disodli yn y blynyddoedd i ddod â ffwrnais bwa trydan.