of Grove Street, Birmingham - see William Mills (of Birmingham)
of Friar Park Foundry, Wednesbury
1885 Company established by William Mills (1856-1932) in Sunderland, when he established the first aluminium foundry in the United Kingdom at The Atlas Works, Bonnersfield, Monkwearmouth.
1900 Atlas Works, Bonner's Field, Sunderland (Aluminium Castings).
1903 Incorporated as a Limited Company.
1905 Opened a new factory in Birmingham to supply the Midlands - see William Mills (of Birmingham)
1914 Aluminium Founders and Finishers. Specialities: Aluminium Castings for Motor Car Builders and all other trades, Cooking Utensils, Aluminium Alloys, Boat Gear, Sportsmen's Stools, Golf Clubs. Employees 300. 
1915 Mills opened the Mills Munitions Factory in Birmingham, making the Mills Bomb Hand Grenade.
Presses. Exhibit at Armley Mill Museum.
1937 Aluminium founders and die casters.