The production of fluorspar and cryolite in 1909, 1911.

Advance chapter from Mineral resources of the United States calendar year 1909, 1911.

The mineral industry of the British Empire and foreign countries. Statistics, 1919-1921. Aluminum, including bauxite and cryolite.

At head of title: Imperial Mineral Resources Bureau.

The mineral industry of the British Empire and foreign countries. Statistics, 1920-1922. Aluminium, including bauxite and cryolite.

At head of title: Imperial Mineral Resources Bureau.