Federal investigators on Wednesday were finally able to make their way through wind and fog to reach the site of the plane wreckage in Alaska that killed former Sen. Ted Stevens, R-Alaska, on Monday. Without information from a black-box flight recorder, investigators will rely on what they find from the remains of the 1957 DeHavilland floatplane and testimony from the four survivors of the crash to determine whether mechanical failure, structural fracture or weather may have caused the crash.

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