https://www.wsj.com/articles/new-oil-boom-simmers-in-mexicos-aging-golden-belt-1415135825 Juan Montes, "A New Oil Boom in Mexico’s Aging ‘Golden Belt’"], Wall Street Journal, 4 November 2014, accessed 10 December 2014 In early 2015, the government planned to accept bids on 169 blocks, 47 of which are within 70 miles of Tampico.