**A fourth body has been found at the site of Tuesday’s plane crash in Papua New Guinea in which all 13 passengers are believed to have died.**Australian disaster identification experts and helicopters are joining recovery efforts on a mountain ridge near the Kokoda trekking village.
Poor weather and the rugged landscape in the Owen Stanley Ranges have made the recovery job difficult.
Nine Australians, one Japanese and three Papua New Guineans were killed.
Radio Australia said a second recovery team had arrived at the site of the crash.
Australian Prime Minister Kevin Rudd said an air force Black Hawk helicopter was able to winch the second recovery team into the site on Friday morning.
Mr Rudd said: "It’s now on the ground. They’re all applying what is a standard Interpol protocol for how you deal with crash sites of this nature.
“It does take time but we are exerting every possible effort to get this done in as quick and as dignified manner as possible.”
Painstaking process
The Sydney Morning Herald and The Australian newspapers reported that a makeshift helipad has been constructed near the wreckage to help speed up the identification and recovery process.
Australian Foreign Affairs Minister Stephen Smith said every effort would be made to help the families of the victims.
“They are now forced to wait some time before their loved ones are returned,” he said.
“We now have to brace ourselves for what will be potentially a painstaking and long process, much longer than we would want,” Mr Smith told ABC Radio.
Mountainous terrain and lack of roads make air travel vital for the nation’s six million people.
But crashes are fairly frequent - at least 19 planes are reported to have come down since 2000.