Mosolov's most famous composition, "Iron Foundry", was originally the final movement of a ballet suite titled, "Steel". The work premiered in Moscow on December 4, 1927, in a concert held by the ACM to commemorate the tenth anniversary of the Revolution. Its Western debut was at the ISCM festival in Liège on September 6, 1930, and it came to America two months later when the Cleveland Symphony Orchestra held a performance. Although it was originally praised as "a mighty hymn to machine work" and as a piece that glorified industrialization and "the worker", as the years passed the piece began to receive criticism from increasingly conservative Soviet authorities. Some critics argued that the workers, ironically enough, didn't enjoy such music, while others argued that the workers, "for whom machine oil is mother's milk," were roused and inspired by music of their time. One critic found in the music "no organized will to victory, in fact very little besides the petty-bourgeois anarchy", while conceding that it was "striving to find an individual idiom"; another called it a "grossly formalistic perversion of a contemporary topic". Today, only "Iron Foundry" remains from "Steel": the manuscripts were lost in 1929, the same year that Mosolov came under increased fire from Soviet authorities.