Mon, Apr 22, 2013 12:00 - Potash Ridge Corporation (POTRF: OTC Link) - Tier Change - The symbol, POTRF, no longer is classified as Grey Market. As of Mon, Apr 22, 2013, POTRF resides in the OTC Pink Current tier. You may find a complete list of tier changes at otcmarkets.com.
Soperior Fertilizer (CE) (USOTC:POTRF)
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Soperior Fertilizer (CE) (USOTC:POTRF)
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