In the early stages of the search, they invited a party of Ainu tribe from Hokkaido, searching with them and their hunting dogs, finding bodies successfully.
また、捜索活動初期の頃、北海道からアイヌ人一行を招き、彼等と彼等が所有する猟犬と共に捜索活動を行い、遺体発見でかなりの成果を挙げた。