FILE - In this Sept. 17, 2011 file photo investigators screen soil from a hole excavated by law enforcement where search dogs indicated the smell of human tissue decomposition near the base of Topaz ... more 
FILE - In this Sept. 17, 2011 file photo investigators screen soil from a hole excavated by law enforcement where search dogs indicated the smell of human tissue decomposition near the base of Topaz Mountain as law enforcement is looking for missing Utah mother Susan Powell, 50 miles northwest of Delta, Utah. Powell disappeared from her West Valley City home in Dec. 2009 and hasn't been seen since. Authorities on Tuesday Sept. 20, 2011 continued their searching in rugged desert terrain for signs of Powell. (AP Photo/Jim Urquhart) less 
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Associated Press | Photo By Jim Urquhart
Tue, Sep 20, 2011 1:55 PM EDT