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We can even explain that odd one, tungsten and wolfram.

It is being re-opened by a company called Wolf Minerals, named after "wolfram", an alternative name for tungsten and why the element is represented by a W in the periodic table.

A miner holds wolfram in Ngungu, 60km west of Goma in the Democratic Republic of Congo, where mineral wealth has caused conflict.

Of wolfram—taking only one example—this part of the State alone can supply the world's demand, and have a good deal to spare afterwards.

Tungsten, tung′sten, n. a rare metal, chiefly derived from wolfram, which is a tungstate of iron and manganese, and likewise found in scheelite, which is a tungstate of lime.—n.