The Minister of State for Finance, Mrs. Nenadi Usman, has alleged that about 30 per cent of the corruption in the public service is traceable to the Nigeria Customs Service. She also accused officers of the service of contributing to the closure of many manufacturing companies in the country. Usman said if the service could be reformed the larger part of the ongoing economic reforms embarked upon by President Olusegun Obasanjo would have been done.