Word: columbium
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Dates: during 1930-1939
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...furnace, such metals as vanadium, titanium, columbium, zirconium, and the platinum group, which have been difficult to study because of their very high melting points, can be melted into very pure alloys. Then, through X-ray photographs, significant students can be made of the individual peculiarities of molecular structure and other physical characteristics...