Etna DOC affects the maturation of the grapes and therefore there is a significant difference between the harvest period of the Etna and the rest of the Sicily areas. The soil is volcanic and very rich in minerals. It is formed by the disintegration of one or several types of lava of different ages and eruptive materials such as lava, ash and sand. Containing all these particles, the crops cultivated on Etna soil benefit from nutrients like iron, copper, phosphorus, magnesium and others. Etna DOC Etna is a "Denominazione di origine controllata" (DOC) for wine from the Etna region in Italy. Etna
Etna (sternwheeler) bore and stroke of . In December 1912, Etna Transportation Company, owners of "Etna", bought an electric generator to install on the steamer. Electric lights were made necessary because of the increased level of traffic on the river required the steamer to operate during darkness, particularly in the winter when the days were shorter. Horace Campbell planned to use "Etna" on the Lewis River route in conjunction with the sternwheeler "Mascot". Logging camps and mills up the Lewis river depended on shallow-draft steamers like "Etna" to bring in supplies. "Etna" also carried passengers. In June 1910, when low water barred