of Parkfield Works, Stockton-on-Tees
1901 Public company formed to acquire patents and processes for the production of cheap power and heating gas ("Mond Gas") with recovery of sulphate of ammonia, and the manufacture and sale of such plant. Patents to be acquired from Dr Ludwig Mond, United Alkali Co and Mr E. J. Duff. Processes at work using coal feedstock as Winnington Works of Brunner, Mond and Co and Fleetwood Works of United Alkali Co. Had entered into agreement to purchase Ashmore, Benson, Pease and Co, manufacturers of gas plant and engineers.
1914 Gas producers and specialists for power and heating. Specialities: plant for power and heating purposes; Mond gas plants for bituminous coal, brown coal, lignite and peat, with or without ammonia recovery; suction bituminous plants for free-burning coals, peat, wood shavings and sawdust etc.; suction gas plants and pressure gas plants for anthracite and coke; water gas plants; heating producers; marine suction plants; industrial gas furnaces. Employees 1,000. 
1951 Dr Neils Rambush became chairman until his death in 1957.
1960 Merger of Davy-United and Power-Gas Corporation Ltd, by offer of Davy-United shares for the whole of the share capital of Power-Gas. The new company would be known as Davy-Ashmore Ltd, the Ashmore name coming from Power-Gas's principal subsidiary Ashmore, Benson, Pease and Co. Existing subsidiaries would continue to operate under their current names.
1961 Gas, chemical, nuclear energy, petroleum and blast furnace engineers. 4,000 group employees.