"Fine steps, ladders and stage railings
/ Based on the experience with the bulk freight wagons with meterable gravity unloading developed from 1954, the German Federal Railways procured various types from several wagon factories from 1959 to 1962.
Initially, self-unloading wagons without a swivel roof of the type Otmm 64, from 1980 redesignated as Fc 089. Their main use was in the transport of ballast, ore and coal. In order to also be able to transport moisture-sensitive bulk goods such as grain, sugar or chemical goods, the wagons of the type Ktmm(v) 65, from 1968 Td(s) 928, were converted from the type described above by the installation of a new upper box with a swivel roof.
Between 1983 and 1986, part of the Fc 089 was sold to the Deutsche Reichsbahn.
From 1988 onwards, when the economic useful life was reached, the ranks of these self-unloading wagons thinned out. Even today, some of these wagons are still in service, mainly in construction train traffic and on various private railways."