Complex sentence: The Peckett OQ was a series of three 0-6-0 saddle tank steam railway locomotives built by Peckett and Sons of Bristol, between 1951 and 1954 for Mardy and Tower collieries in South Wales.
Split into simpler sentences: The Peckett OQ was a series of three Industrial Steam Locomotives that used an 0-6-0 configuration with a saddle tank. They were series of 3 steam railway locomotives built by Peckett and Sons of Bristol, between 1951 and 1954 for Mardy and Tower collieries in South Wales.