The principal industry was the manufacture of iron and steel products, which, including steel and rolling mills, car, foundry and machine shops, and shipyards, represented more than 30% of the total capital, and approximately 25% of the total gross product of the manufactures in the state.
During his eleven years' ministry (1876-1878 with Depretis, 1884-1891 with Depretis and Crispi, 1896-1898 with Rudini), he succeeded in creating large private shipyards, engine works and metallurgical works for the production of armour, steel plates and guns.
The city is the chief commercial centre of the state and has shipyards for the construction of river and lake vessels.
Hanna & Company in 1877, was extended to include the ownership of a fleet of lake steamships constructed in their own shipyards, and the control and operation of valuable coal and iron mines.
After 1890 important shipyards were established near San Francisco.