I bet it wasn't just Brazil either and it had nothing to do with North Korea. It had to do with not wanting the USA invading them and turning their country into a scene from a Mad Max movie set. Do you blame them?
And yes they do have oil.
Don
http://www.armscontrol.org/print/1536Brazil Denies IAEA Full Access to Enrichment Sites
Arms Control Today
Fissile Material
News & Negotiations
Dan Koik
The Brazilian government continues to refuse to allow International Atomic Energy Agency (IAEA) inspectors to eyeball equipment at its uranium enrichment plant, citing the need to protect its industrial secrets.
IAEA inspectors who have recently visited enrichment facilities at Resende have arrived to find portions of the site and its equipment concealed. Brazilian officials acknowledged that portions of the plant had been hidden, arguing that Brazil was not required to disclose every detail of the process. They said that inspectors would be allowed to conduct tests on uranium entering and leaving the facility as well as on the surrounding area.
Brazil claims that their enrichment equipment is up to 30 percent more efficient than previously possible and that allowing visual inspections of the equipment will allow competitors to steal its trade secrets. Brazil, which has the world’s sixth-largest natural uranium reserve, hopes that a domestic enrichment facility will allow it to save between $10 and $12 million every year on fuel for its own nuclear reactors and, eventually, to export surplus fuel.
Brazil’s actions have annoyed IAEA officials and other diplomats, who say that, although Brazil is not suspected of developing nuclear weapons, its refusal to allow unfettered access sets a bad precedent at a time when the international community is trying to compel Iran and North Korea to accept similar inspections.
The controversy comes after statements by Brazilian President Luiz Inacio Lula da Silva and former Minister of Science and Technology Roberto Amaral raised doubts about Brazil’s commitment to the nuclear Nonproliferation Treaty (NPT). In a speech last year, Amaral said that Brazil needed to maintain scientific research capabilities in all fields, including the knowledge necessary to produce nuclear weapons. Lula quickly distanced himself from the remarks and Amaral was among the first to resign during a reorganization of the government this year. But Lula’s own nonproliferation credentials had been tarnished when he criticized the NPT as a discriminatory treaty during his campaign for the presidency in 2002. (See ACT, November 2003)
Indeed, Brazilian diplomats have echoed Lula’s earlier remarks in the controversy over inspections of the enrichment facilities. They have taken particular umbrage at President George W. Bush’s February proposal that countries which did not already possess such enrichment technology be prevented from acquiring it. (See ACT, February 2003)