After 1945, problems associated with post-war reconstruction and the availability of cheap domestic-produced coal kept steam in widespread use throughout the two following decades. However the ready availability of cheap oil led to new dieselisation programmes from 1955, and these began to take full effect from around 1962. By then it was apparent that steam locomotives had reached their limit in terms of power within the restrictive British loading gauge, with no scope for larger boilers or cylinders even if mechanical firing were to be employed. Towards the end of the steam era, steam motive power fell into a state of disrepair. The last steam locomotive built for mainline British Railways was BR Standard Class 9F 92220 Evening Star, which was completed in March 1960. The last steam-hauled service trains on the British Railways network ran in 1968, but the use of steam locomotives in British industry continued into the 1980s. In June 1975, there were still 41 locations where steam was in regular use, and many more where engines were maintained in reserve in case of diesel failures. Gradually, the decline of the ironstone quarries, steel, coal mining and shipbuilding industries – and the plentiful supply of redundant British Rail diesel shunters as replacements – led to the end of steam power for commercial uses.