By THE PULSE NEWS MEXICO STAFF     Two minor boys – a 15-year-old and a 17-year-old — injured during the Jan. 18 Tlahuelilpan, Hidalgo, gasoline duct explosion have been flown to the Shriners Hospital in Galveston, Texas, for treatment. Both considered to be in critical condition, the youngest boy suffered burns of 83 percent of his body, while the elder boy