EARTH Magazine · From the archive
Originally published in EARTH Magazine. This article is part of our archive.
Oil and petroleum imports data are preliminary numbers taken from the American Petroleum Institute’s Monthly Statistical Report. For more information visit www.api.org.
June 26, 2014
U.S. Geological Survey mineral commodity specialist John F. Papp compiled the following information on niobium, also called columbium. Niobium, …
July 29, 2014
U.S. Oil & Petroleum Imports (million of barrels per day) ' Oil and petroleum imports data are preliminary numbers taken from the American …
January 29, 2019
By Amanda Brioche, USGS mineral commodity specialist PRODUCTION GEOLOGIC OCCURRENCE Boron does not occur in nature in an elemental state. It is …
