Italian cruiser Etna Italian cruiser Etna Etna was a protected cruiser of the Italian "Regia Marina" (Royal Navy) built in the 1880s. She was the lead ship of the , which included three sister ships. Named for Mount Etna on the island of Sicily, the ship was laid down in January 1883, was launched in September 1885, and was completed in December 1887. She was armed with a main battery of two and six guns, and could steam at a speed of around . "Etna" frequently cruised abroad throughout her career, including visits to the United States for the World's Columbian Exposition and
Etna Furnace (Williamsburg, Pennsylvania) Etna Furnace (Williamsburg, Pennsylvania) Etna Furnace, also known as Mount Etna Furnace, Aetna Furnace, and Aetna Iron Works, is a historic iron furnace complex and national historic district located at Catharine Township, Blair County, Pennsylvania. The district includes five contributing buildings, six contributing sites, and two contributing structures. It encompasses a community developed around an iron furnace starting in 1805. Included in the district is the four-sided stone furnace (1808), gristmill site (c. 1793), canal locks (c. 1832), site of lock keeper's house (c. 1832), aqueduct (c. 1832, rebuilt 1848), two small houses, the ruins of a charcoal house (1808),