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.
Why Eclipses Happen. A total solar eclipse is a cosmic coincidence with stunning visual effects for viewers on Earth. When the moon passes in front of the sun and blocks it completely, it casts a shadow onto our planet that plunges areas into a darkness that feels like nighttime in mid-day.