Manhattan Project Shield Window Fragment - SOLD 179g rockinaboxchelyabinsk "Tree-Ring Dating of Meteorite Fall

"Tree-Ring Dating of Meteorite Fall in Sikhote-Alin

A shift in climate and a decline in tropical zones brought about expansive plains and grasslands

it was our first visit to our lunar neighbor

The creature was part of the Dromaeosauridae family

The bead at the center of this bracelet contains a mixture of different classes of meteorites (howardite

Manhattan Project Shield Window Fragment - SOLD 179g rockinaboxchelyabinsk "Tree-Ring Dating of Meteorite FallThis specimen is a 179 gram fragment of a leaded glass shield window installed in the T Plant (221 T) Plutonium Recovery Building, the first and largest of two production bismuth phosphate chemical separations plants used to extract plutonium from fuel rods irradiated in the Hanford Sites reactors. The Plutonium produced here was used in both the Trinity test on July 16, 1945, and in the "Fat Man" atomic bomb used over Nagasaki, Japan on August 9,