Slideshow: Search continues for missing snowmachiner near McGrath

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McGrath SAR members chain sawing away ice so that a new area of the river bottom can be checked. Notice the frosted trees -- common near open water in cold weather.

Searchers, seen in these photos taken by Lucy Miller and Sam Samuelson and published with permission from Bethel Search and Rescue, spent the weekend checking an open lead on the Kuskokwim River near the McGrath airport for 24-year-old Anchorage man Casey Graham.

Graham's snowmachine was recovered from the river shortly after he was reported overdue from a trip on Thursday, Dec. 10, 2015, with search efforts continuing the following Monday.