Colleferro (IPA: /kɔllefɛrro/) is a small town with 20 698 inhabitants of the Metropolitan City of Rome in the Lazio region of central Italy. It is a residential zone with many different industries and sports structures. It borders the City of Frosinone. Physical geography Territory Colleferro, not exactly in the province of Frosinone, but on its threshold in the province of Rome, is the site of one of the private industries of Central Italy, Bombrini and Parodi; it stands out in the agricultural and pastoral industries and it's one of the most hardworking of Lazio. "Incubation place" of anti-fascism before the war broke out, the center of partisan struggle later, and today of politically advanced ideas, Colleferro is a small modernist worker city, full of radio antennas. Regions like Lazio, modernizing themselves, not only attenuate old characteristics but also compete with "opposite ones". (Guido Piovene) Colleferro is located near the Sacco (river) in the Valle del Sacco. History Appian 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 Sulla. 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 by the Colleferro train. Toti was lubricating the engine of the locomotive and, when the locomotive moved, he slipped causing his left leg to be 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 (the Valsacco factory) to an explosive factory. Initially, the town developed away from where the center is today; the first few buildings (including the Church of St. Joachim) 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 (former senator and son of the founder of the National Bank, then Bank of Italy) and Senator Giovanni Bombrini founded the 'Bombrini Parodi Delfino explosives factory. Nearby, a new "BPD Village" was created, and factory workers and their families from throughout Italy moved into them. Later, a cement factory opened (the "Lime & Cement Segni", subsequently acquired by Italcementi), using materials quarried from the nearby town