The Office of Thrift Supervision, the chief regulator of the U.S. savings-and-loan industry, has advised Washington Mutual that its application to buy Providian Financial is complete. It won't hold hearings on the proposed deal, an Aug. 5 report from Reuters said.

The notification is not a final approval, but it does close the period for public comment on the merger, reportedly valued at $6.45 billion. The merger was originally announced in June and kicked off what has turned out to be a summer of consolidation in the credit card industry, according to the Reuters report.

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