Steel giant Tata is to press ahead with plans to close blast furnaces at its biggest plant, threatening more than 3,000 jobs, according to sources.Unions were meeting the company on Thursday after presenting alternative proposals aimed at saving jobs in Port Talbot, south Wales.

Steel giant Tata is to press ahead with plans to close blast furnaces at its biggest plant, threatening more than 3,000 jobs, according to sources.Unions were meeting the company on Thursday after presenting alternative proposals aimed at saving jobs in Port Talbot, south Wales.