BHP
Billiton has put its new Jensen potash mine in Saskatchewan on hold.
Potash prices weakened sharply soon after BHP, in Australia, decided to dig the mine. A cartel between Russia and Belarus collapsed and both then increased production at ever-lower prices.
The Canadian cartel hung together and the partners cut back production in an effort to increase prices.
They have increased, but still remain well below the record-high prices and optimism about a decade ago.