Editing Phosphorus (section)

===Mining===
[[File:The site of secondary mining of Phosphate rock in Nauru, 2007. Photo- Lorrie Graham (10729889683).jpg|thumb|right|Mining of phosphate rock in [[Nauru]]]]
[[File:ONCF E 1350 with phosphate train near Tamdrost.jpg|thumb|right|A phosphate train on its way to the [[port of Casablanca]] in Morocco.]]

Means of commercial phosphorus production besides mining are few because the [[phosphorus cycle]] does not include significant gas-phase transport.{{r|Neset2011}} The predominant source of phosphorus in modern times is phosphate rock (as opposed to the guano that preceded it).

[[Phosphate mining in the United States|US production of phosphate rock]] peaked in 1980 at 54.4 million metric tons. The United States was the world's largest producer of phosphate rock from at least 1900, up until 2006, when US production was exceeded by that of [[China]]. In 2019, the US produced 10 percent of the world's phosphate rock.{{r|USGS2021}}