Manhattan Project Shield Window Fragment decade-2024 All specimens will have a

All specimens will have a layer of aluminized Kapton foil and a layer of fibrous bulk material

including Wyoming’s state fossil: Knightia eocaena

They are also coated in a layer of acrylic enamel

Washington

with some growing to 10 feet tall

Manhattan Project Shield Window Fragment decade-2024 All specimens will have aThe Manhattan Project was the codename for the research and development effort which allowed the United States to rapidly develop a series of atomic breakthroughs during World War II, including the first industrial scale plutonium production reactor and the first atomic bombs. This enormous project involved over one hundred thousand scientists, engineers, technicians, and construction workers at more than 30 sites across the United States, including