I think this is the article you cited:
29 April 2011 Last updated at 20:30 GMT
Libya crisis: Rebels vow not to use landmines
By Stuart Hughes BBC News
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Libya's opposition National Transitional Council (NTC) has now issued a formal pledge not to use landmines and to destroy all mines held in rebel stockpiles.
A communique signed by the Abdulhafeeth Gogha, vice chairman of the NTC, and seen by the BBC promises that "no forces under the command and control of the Libyan National Transitional Council will use anti-personnel or anti-vehicle landmines".
Treaty
It says forces under the command of the NTC "shall be requested to destroy all landmines in their possession" and to "co-operate in the provision of mine clearance, risk education, and victim assistance".
The communique also says that any future Libyan government should sign up to the 1997 Ottawa Treaty, that bans the production, use and stockpiling of anti-personnel mines.
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more...
http://www.bbc.co.uk/news/world-africa-13243929 It's the only instance I know of for rebel use, and it was the PRB-M3 anti-tank mine. If you know of another, I'd love to see a link. I have looked, but google seems a bit overwhelmed.
I don't think I need to cite the dozens of follow-up articles saying the NTC has begun to follow up on its pledge, nor should it be necessary to cite the many instances where Gaddafi forces have continue to use them, even in Misrata Port, Misrata neighborhoods, Ajdabiya, Brega. It seems to be a habit when they fall into retreat. Perhaps that's why google is overwhelmed.