Sugar factory of Épila and the 1931 strike Historical milestone · Épila, Valdejalón, Zaragoza Image of Épila, not of the place itself. The sugar factory opened in 1908 came to employ some one thousand five hundred workers. On 2 January 1931 a strike broke out and the following day the Civil Guard fired on the crowd, with two dead. The sugar factory closed in 1969. 1908-1969 Photo: Bibliofilotranstornado (CC BY-SA 3.0) What to see and do in Épila