In times past, South Africa's railways were well-known for using in desert / semi-desert regions of the country where water was scarce; steam locos (class 25 4-8-4's), with specially-designed large and long tenders which in addition to a tender's primary purpose, were ingeniously fixed-up mechanically, to take in the loco's exhaust steam and condense it into water: thus saving on the amount of water needing to be supplied from outside.
There has been another country with large water-poor expanses, which during its steam era did on a large scale, the same thing -- i.e. locos equipped with condensing tenders. Which country was it?