Johnster's exposition above is really interesting and informative - thank you. It may be almost a cliche that we are told that from the turn of the century onwards, one of the reasons railway companies didn't build bigger, more sensible wagons than 9ft wheelbase unfitted coal trucks, is that private mine owners refused to invest money improving facilities at their mines. Given that there is no question this country was skint in 1948, but that we now did have a nationalised coal industry, why do we think the IWC didn't propose the building of larger, fitted wagons, certainly for coal and other suitable traffic?
Or did they?
Best wishes,
Alastair