Blackrock Oil Corporation (ONTRF: OTC Pink Limited) | Tier Change Fri, Oct 31, 2014 12:00 -
Blackrock Oil Corporation (
ONTRF : OTC Pink Limited) - Tier Change - The symbol, ONTRF, no longer is classified as OTCQB. As of Fri, Oct 31, 2014, ONTRF resides in the OTC Pink Limited tier. You may find a complete list of tier changes at
otcmarkets.com .