sentences:  Among the earliest engines are the original number 1 engines built by Crossley and Mirrlees.Manchester became predominant in the development and manufacture of stationary engines, and by the 1900s, there were over 20 engine makers in existence within 20 miles of the museum.Mirrlees, Bickerton & Day, in Hazel Grove, concentrated on developing the light and heavy oil diesel engine and L Gardner & Sons of Patricroft become known the world over for their role in bringing the small high-speed, quality diesel engines to the industrial and marine markets and Crossley Brothers in Openshaw took up Nicolaus Otto and Langen patents.