A U.S. scientist and former employee of a U.S. Energy Department institute, to which Japanese glass maker Hoya Corp. ships materials, says the institute is conducting nuclear weapons research.
Hoya claims that shipping the product to the facility will not contribute to development of nuclear weapons.
Issac Trotts, 25, is a member of an antinuclear organization in California and former employee of the institute. He told a news conference the facility is conducting research to improve the precision of nuclear weapons.