鉄工場
Factory: machine-music (, ), Op. 19, commonly referred to as the Iron Foundry, is the most well-known work by Soviet composer Alexander Mosolov and a prime example of Soviet futurist music. It was composed between 1926 and 1927 as the first movement of the ballet suite ("Steel"). The remaining movements of "Steel", "In Prison," "At the Ball," and "On the Square" have been lost, and "Iron Foundry" is performed today as a standalone orchestral episode.