A collision Attack occurred Coming_to_be derailing the runaway in such a way that it fouled Hindering the main line just as the 16:15 Manchester to Crewe express approached Arriving , drawn Motion by two locomotives , LNWR Waterloo Class 2-4-0 No 418 `` Zygia '' and Experiment Class No 518 `` Express '' .

`` Zygia '' derailed Causation and fell Motion on her side whilst her tender ran Motion up the platform ramp .

A contemporary photo supposedly shows Statement the re-railed damaged Damaging locomotive `` Zygia '' shortly after the accident Catastrophe .