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Bridge and constructional steel maker, of Middlesbrough
1968 Subcontractors for construction of the Clifton M62 bridge across the River Irwell using an unusual construction method
1969 Falling demand for structural steel led to closure of the Edinburgh works; the business employed more than 4000 people in all; works also at Glasgow, London, Manchester and Middlesbrough
1972 In preparation for introduction of private capital, British Steel created a constructional engineering division and named it Redpath Dorman Long, a shell company, which would include the existing company which was renamed Redpath Dorman Long (Contracting)
1982 Redpath Dorman Long was sold to Trafalgar House for £10 million. British Steel chairman Ian MacGregor wanted to concentrate the corporation's activities purely on iron and steel making. Eventually merged with Cleveland Bridge and Engineering Co. From the 1st October the structural engineering division was controlled under the collective umbrella of Cleveland Redpath Engineering Holdings.