Editing Mequinenza (section)

==== World War I ====
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[[File:Aiguabarreig Segre - Ebre a Mequinensa.JPG|thumb|View of the old town of Mequinenza from the castle]]

The favorable situation during the years of [[World War I]] where the basin extracted up to 30% of the national coal, allowed to accumulate enough capital in the companies of the coal basin to start a second modernization between 1924 and 1925. Compressed air and electricity were introduced into the mines, a fact that allowed the coal extraction capacity to be further increased. In the late 1950s, the Mequinenza miners saw their jobs threatened in part by the construction of the [[Mequinenza Dam|Mequinenza]] and [[Riba-roja reservoir]]s, which would flood the mining galleries. In the mid-1970s, great changes were introduced in the coal exploitation systems, going from small galleries to much larger galleries, using new and safer systems that allowed higher extraction yields.