The Asturian strikes that occurred in the summer of 1963 were the second major challenge to the Franco dictatorship over the span of one year. The first challenge had occurred in the spring of 1962 (see “Spanish coal miners challenge Franco dictatorship, 1962”). As with the strikes in 1962, the 1963 strikes began in the privately owned mines of Asturias during the last week of July 1963. In total, the miners’ executed their strike for 60 days, finally stopping the strike at the end of September. By the end about 40,000 to 50,000 workers had participated in the campaign.