[72c20customcamper]

Peaked my interest seems that steel had isotopes in it released by above ground detonations . This is interesting as the levels have now gone down to normal and steel manufacturers use purified 02 .

“Thankfully, since the end of atmospheric nuclear testing in the 1960s, radiation levels have decreased to near natural levels. In most cases, modern steel is sufficiently “uncontaminated” for use in most radiation-sensitive applications. This is because steelmaking has also largely turned away from the Bessemer Process in favor of the Basic Oxygen Process, which uses uncontaminated pure oxygen instead of atmospheric air”

Seems the demand was for scientific instruments that were sensitive to the isotopes. But with modern electronics the instruments could be set to compensate.

https://interestingengineering.com/s...-pre-war-steel