The company confirmed the investment was new money and was an "expression of intention and vision for Port Talbot and the steel industry in Wales".
Mr Jones said: "Mr Muthuraman explained to me that Tata steel plans to invest up to £800m over the next five years in their Welsh facilities. This substantial investment will be used to improve production, product mix, quality and product range at their plants in Wales.”
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"He noted too that Port Talbot is one of the best sites in Europe for steel making."
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"Mr Muthuraman paid tribute to the quality of the workforce available in Wales and recognised the importance of the continuing partnership with the Welsh government in creating confidence for long-term investment decisions.”