Leighton Buzzard Light Railway 19th century sand was carried by horse carts from quarries south of the town to be shipped on the Dunstable-Leighton Buzzard railway. The carts damaged roads and resulted in claims for compensation against the quarry owners from Bedfordshire County Council. At the end of the century steam wagons were introduced which increased the damage to roads. The outbreak of the First World War cut off supplies of foundry sand from Belgium. Sand was needed for ammunition factories and new sources were sought. Leighton Buzzard sands proved well suited and production increased. After 1919 the quarry companies were told they could
Leighton Buzzard Light Railway until 1969. In 1968 the line was more lightly used and volunteers under the name of "The Iron Horse Railway Preservation Society" took over the line on weekends to run the first formal passenger services on the line. Part of the agreement between the railway and the volunteers was that volunteers would repair the permanent way. This was undertaken, the group having purchased secondhand rolling stock and four Simplex diesels from the St Albans Sand and Gravel company, which were dismantled and formed into one machine. The last sand train ran on the main line in 1969, although several quarries