http://rogerfarnworth.com/2020/06/30/ra ... tive-power
We have already noted in this series that Iran had a very limited railway network at the turn of the 20th century. Essentially just one railway line which was of a narrow gauge and was no more than 6 miles long. Glyn Williams says that the line, as built, … was approximately 5.5 miles in length and had two branch lines of 2.5 miles in length. [22]
Its roster of locomotives was limited to five in total. And details of these can be found on the manufacturer’s listings, as tabulated below. [21] The full article is in french. The locomotives were built in Belgium by La Tubize.