and Plutarch describe a decisive battle in the Civil War against Gaius Marius the Younger, which took place in 82 BC at Colleferro, concluded in favor of Silla. At the end of the siege Marius committed suicide. At Colleferro Italian patriot Enrico Toti, on 27 March 1908, had his left leg crushed. The train was stopped at the station to be joined with the Colleferro train. Toti was lubricating the engine of the locomotive and, when the locomotives moved, he slipped causing left leg being trapped and crushed by the gears. The development of the town began as early as 1912 with the conversion of a long disused sugar factory to an explosive factory. Initially, the town developed away from where the center is today; the first few buildings were built within the territory of the nearby town of Valmontone, near the train station that was then called "Segni-Paliano", and was renamed "Segni-Station Colleferro" after the birth of the town. The engineer Leopoldo Parodi Delfino and Senator Giovanni Bombrini founded the 'Bombrini Parodi Delfino explosives factory. Nearby, a new the "BPD Village" was created, and factory workers and their families from throughout Italy moved into them. Later, a cement factory opened, using materials quarried from the nearby town of Segni. Colleferro continued growing throughout the 1920s and 1930s with still within the municipality of Valmontone. In 1935 Colleferro was incorporated as a new city. Later, Colleferro incorporated portions of the neighboring municipalities of Segni and Paliano. On 1 February 1938 there was the worst ever explosion at the Bombrini Parodi Delfino. The number of dead and wounded and the damage was so severe that the news was reported even in the British Times. Within about three hours with of the explosion, the king, Victor Emmanuel III, Benito Mussolini, along with government and military officials, were in Colleferro to see what happened, visiting the wounded, and planning what to do for the wounded and the town. During World War II, the Allies repeatedly bombarded Colleferro to destroy the explosives factory. During the attacks, citizens found shelter in a series of caves and tunnels built under the "BPD Village". In the early 1950s, BPD manufactured Lauryl, the first soap powder in Italy. On 9 October 2007 one person was killed and eight were injured in an explosion at a weapons factory belonging to Italian company Simmel Difesa.
The air-raid shelters, residues of World War II, where some 1,500 civilians found shelter during the bombing, most of the "refuge" is still open on the feast of St. Barbara, patron of the country.
Economy
Agriculture
The territory has always been an agricultural vocation. From 2006 is in the "Rural District and the Valley of the agro-energy Latin. As part of the redevelopment of the Valle del Sacco was initiated an experiment in "non-food crops. The crops will be sunflower for the biodiesel and poplars to power boilers biomass. As for the 'livestock, the environmental crisis had forced the slaughter of livestock and destruction of health protection for milk in all farms in the area. The farm has since rebounded with numerous protections for consumers.
Industry
The development of Colleferro is linked from the beginning to its industrial, with the opening of explosives Bombrini Parodi Delfino, to which were added numerous chemical plants and textile. The industrial area of Colleferro spread over 1000 hectares of land, mostly owned by Se.co.svim. Some of the companies in the territory and have been: SNIA S.p.A. for working with pozzolan's Italcementi in the chemical Caffaro Ketones, Caffaro Benzoin the Se.co. Svim; for the construction and repair of the railway car body Alstom and RFI. Among the companies working with advanced teconology, Avio operates in the aerospace sector. Simmel business is in the war industry.
