Police are searching for a 46-year-old prospector missing in the Lake Ballard area near Menzies.
Emergency services do not know if the man has food, water and shelter and hold serious concerns for his safety and welfare.
The prospector was last seen on Sunday and was reported missing on Tuesday afternoon.
Police went to his camp on Tuesday and found the man's vehicle and supplies.
A land search failed to locate him.The search is continuing today .
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