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The NEC requirements do not have the effect of law ; however , the majority of jurisdictions in the United States adopt the NEC by reference into local building and fire codes , which are then enforced by the authority having jurisdiction . The economic hole left by the migrants should they take up the offer - - the work they do , the goods they buy and the taxes they pay - - is another matter . He noted that the active and large grants being administered ( see account of Ph.D. program status above ) help offset the budget cuts , but the doctoral program 's approval and implementation may be slowed down by the low budget , despite the demand for the program . The Faculty Search Committee consists of the Director of the School and at least five members of the faculty chosen by the Director . And it is pervasive : scientists have estimated that 8 % of American women have mercury levels above those considered safe by the US Environmental Protection Agency1.The main sources of mercury in the environment include coal-fire power stations and chlorine-production plants , as well as gold and silver mines .