It was known back then but buried.

After Mining Deal, Financier Donated to Clinton

New York Times Jan 31, 2008

"..... Mr. Nazarbayev walked away from the table with a propaganda coup, after Mr. Clinton expressed enthusiastic support for the Kazakh leader’s bid to head an international organization that monitors elections and supports democracy. Mr. Clinton’s public declaration undercut both American foreign policy and sharp criticism of Kazakhstan’s poor human rights record by, among others, Mr. Clinton’s wife, Senator Hillary Rodham Clinton of New York.

Within two days, corporate records show that Mr. Giustra also came up a winner when his company signed preliminary agreements giving it the right to buy into three uranium projects controlled by Kazakhstan’s state-owned uranium agency, Kazatomprom....."

http://www.nytimes.com/2008/01/31/us/politics/31donor.html?ei=5065&en=6a843530898e147a&ex=1202446800&partner=MYWAY&pagewanted=print