Painting. [A steam hammer at work] / by James Nasmyth (1808-1890), 1871. Oil on board; 40 x 50 cm, in gilt frame 52x62x6cm. Initialled and dated bl, J.N. 1871. This is an apotheosis of the artist-engineer's invention of 1839 as a triumph of civil engineering. Inside a foundry works, the large steam hammer is shaping a massive iron bar before it can be rolled onto a plate. Possibly the sketch exhibited at a Conversazione of the Institution of Civil Engineers on 1871 June 6, item 46, and painted at their request. Steel-making