Besi
yang tidak mengeluarkan radiasi hanya ada di bawah laut
Pre-atomic
age metal only found under the sea
PETALING
JAYA: Low-background steel is steel manufactured before the atomic age.
It was
manufactured prior to 1945, when the atmosphere became contaminated by the
atomic bombings of Hiroshima and Nagasaki during World War II, and subsequent
nuclear testing during the Cold War.
Global steel
production has since seen an increase in radioactivity in the metal.
This
radioactivity affects metal used for ultra-sensitive scientific and medical
instruments and equipment, producing inaccurate readings.
This kind of
steel is very much in demand, a source said.
The only
problem is, almost all non-interference steel lies on the ocean floor, in the form
of ships sunk before 1945.
“The old
sunken ships were not exposed to the air of the atomic age,” said the source.
This old
metal is recycled and used to manufacture instruments used in medicine, light
and radioactivity detection, and space exploration.
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