Evening Republican, Volume 18, Number 277, Rensselaer, Jasper County, 23 November 1914 — Coal and Petroleum Production. [ARTICLE]

Coal and Petroleum Production.

The United States mines nearly 40 per cent of the world’s output of coal and produced- 65 per cent of the petroleum in 1913. Of the more essential metals, 40 per cent of the world’s output of iron ore is raised from American mines, and the smelters of the United States furnish the world with 55 per cent of its copper and at least 30 per cent of its lead and zinc.