New Internationalist Magazine: Special Issue on WS (December 1997)
and Fred Pearce: Phosphate: A Critical Resource
Further Reading (wsrw.org)
Mulay Hafid- Smara-Blog (scroll to bottom half)
(has numerous links to governmental & commercial interests involving oil & gas licensing, etc.)
“Part of what made the first green revolution possible was a sharp increase in the use of phosphorous-rich fertilizers. Thanks to this increased use, experts say, reserves of phosphorous are now being exhausted. Foreign Policy has called this ‘the gravest natural resource shortage you’ve never heard of.’ ” ["Billions and Billions," New Yorker, October 24, 2011, p 22].
For more on the environmental, economic and political role that phosphates and phosphate mining plays internationally and in Western Sahara see Fred Pearce's excellent article: "Phosphate: A Critical Resource Misused and Now Running Low." (http://e360.yale.edu/ July 7, 2011)