Mines and Railways of Utrillas Historical milestone · Utrillas, Cuencas Mineras, Teruel The company Minas y Ferrocarriles de Utrillas (MFU) was formed in 1900 at the Casino Mercantil of Zaragoza to exploit the lignite of the Teruel comarca of the Cuencas Mineras. In 1904 the narrow-gauge railway entered service, which, at 127 kilometres, linked Utrillas with Zaragoza, remaining in service until the 1960s. With the company came workers' settlements, mine shafts and unprecedented population growth in the area: in 1976 it employed 66.7% of the miners of the Utrillas-Montalbán basin, with 1460 workers, a figure that had fallen to 150 by 1999. The company, which after the Civil War passed into the hands of Ebro, Azúcares y Alcoholes and then, in 1950, of the Catalan Figols group, ceased its mining activity in 2002. 1900 Photo: Fran Ara (CC BY-SA 4.0) What to see and do in Utrillas