The Potash market is quite concentrated with three countries, Canada, Russia, and Belarus holding about 88% of proven world reserves with Saskatchewan, Canada alone holding almost 47%.

FORBES: How Arizona Is Helping America Reduce Dependence On Foreign Natural Resources

Novlene Williams-Mills of Jamaica won the opening semi in 49.88, edging out Botswana's Amantle Montsho (49.89), while Russia's Anastasiya Kapachinskaya also went through in 50.30.

CNN: Bolt smashes own record to win world 100m title