FRANKFORT, Ky. - Inspections of Kentucky's underground mines uncovered 134 defective breathing devices, state regulators announced Wednesday. ADVERTISEMENT All but one of the defective air packs, which have been removed, were the type used by miners who died of carbon monoxide poisoning in an eastern Kentucky mine explosion in May and in the Sago Mine disaster in West Virginia in January. They were manufactured by CSE Corp. of Monroeville, Pa.