Queenland Police and SES have begun a search of a rubbish dump south of Brisbane for the body of miner David Hanson.
The search for a body or clothing with involve sifting through 5000 tonnes of rubbish.
71-year-old Hanson was last seen alive at midday on February 22, and was due to fly to Tanzania at 5:30pm that afternoon.
He and his baggage never made it to the airport.
Hanson was involved in gold and diamond mining in Africa, and was also known to police having has a history of drug offenses in America.
The search began last Friday, with police and SES volunteers searching through rubbish with gardening tools and rakes.
The search has been narrowed to a specific area of the waste facility, where clothing items could have been dumped on February 23.
Cadaver dogs swept the area on Thursday but found no clues.
About 25 police recruits will be brought in this week to assist the search.
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