Manhattan Project Shield Window Fragment - SOLD 132g B surfite They first appeared in the

They first appeared in the fossil record at the beginning of the Cretaceous Period 145

Each specimen ships in its own glass-topped riker display case that measures 4"x3"x1"

Note: The 1908 Cross Section specimen is a limited-time collector's item

Petrified Evergreen Tree (c

North Pole Dome stromatolites of the Dresser Formation in Western Australia are the oldest known fossil material on the planet

Manhattan Project Shield Window Fragment - SOLD 132g B surfite They first appeared in theThis specimen is a 132 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,