Potash cash operating cost of goods sold net of by-product credits, which we define as total cost of goods sold excluding royalties, depreciation, depletion and amortization, was $199 per short ton in the first quarter of 2010 compared to $238 per short ton in the first quarter of 2009.
Answers.comÂ® is making the world better one answer at a time. It is relativley rare to observe a solar eclipse because the sun's light is blocked by the moon.
This Friday, March 20, marks this year's first and only total eclipse of the sun, when the moon passes directly between Earth and the sun. Not only that, this is an extremely rare type of solar eclipse because it takes place on the first day of spring and when the moon is at its closest distance to Earth, known as a supermoon.