The test nuclear device, "Gadget", in preparation for the "Trinity" nuclear test, July 1945.  Best regarsds, JR.

Partly assembled "Gadget".

Dr Robert Oppenheimer, scientific Director of the Manhattan Project, with General Leslie Groves, US Army Corps of Engineers, standing over the fragmentary remains of the support tower at "Trinity" nuclear test ground zero.  Best regards, JR.

After "Trinity".

The completed nuclear test device is installed in the test tower.  Note the substantial structure of the tower, most of which was vapourised by the explosion.  Best regards, JR.