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1840 William Mackenzie and Thomas Brassey began railway works in France, and elsewhere. These included the greater part of the Paris and Rouen Railway; the whole of the Rouen and Havre Railway, including the stations and the maintenance of way of both lines; the line from Rouen to Dieppe, all under Joseph Locke, and George Neumann. Also part of the Amiens and Boulogne line and the canal works at Bar le Duc; and the Orleans, Tours, and Bordeaux contract.
1841 Contractors for the Paris to Rouen railway, and a canal connecting the Rhone and the Marne
Also see Brassey, Mackenzie and Stephenson