WORLD IN BRIEF : PAPUA NEW GUINEA : Rich Gold Deposits Found Beneath Sea

Scientists, diving into the crater of a submerged volcano off Papua New Guinea, have discovered some of the richest concentrations of gold and silver in the world. But the deposits may be too deep in the sea to exploit soon. Geologist Dr. Brian Embleton of Australia’s Commonwealth Scientific and Industrial Research Organization said a multinational team using a Soviet submarine found the deposits 7,000 feet below the ocean’s surface. The team found gold gradings of 21 grams per ton and silver gradings of 500 grams per ton. “These are amazing grades, very unusual concentrations,” Embleton said.