In 1979 , he discovered about 30 experimental petroglyphs on Kahoolawe , which strengthened the case against the Hawaiian bombings . In 1979 , he discovered about 30 experimental petroglyphs on Kahoolawe , which strengthened the case against the Hawaiian bomb attacks .
Pada tahun 1979, beliau menemui kira-kira 30 petroglyphs eksperimental di Kahoolawe, yang menguatkan kes terhadap pengeboman Hawaii. Pada tahun 1979, beliau menemui kira-kira 30 petroglyphs eksperimental pada Kahoolawe, yang menguatkan kes terhadap serangan bom Hawaii.