I have done some research since my last post. The runways in 1950 were 16/34, 11/29 and 04/22 which is the one that Tmbstory asked about.
Runway 07/25 did not exist then.
A layout of the runways and the DC-3 collision with the train can be read on
www.spiritsofansett.com/history/Niven/trains.htm