The supporters, angry that the club has still not changed hands over a year after Mr Haslam announced he would sell, gathered ahead of the match against Accrington Stanley.
Some heeded a call from Stags Fans For Change (SFFC) to also boycott the match, while others protested and then went through the turnstiles.
It was the latest demonstration by fans fed-up with the lack of movement by Mr Haslam over selling the club - and the limbo status which is affecting manager Billy Dearden's plans to try to keep the club in the Football League.
A similiar protest was held in September ahead of the Dagenham match -
Stags fans step up pressure - and one was planned for the match against Bury at the beginning of the month, before the clash was postponed through heavy rain, following the rejection of the James Derry consortium takeover plan.
Towards the end of the year Mr Haslam stepped down as chief executive, bringing in business troubleshooter Stephen Booth to run the club and find a buyer.
Mr Haslam has also vowed not to attend anymore home matches or go to the club on a day-to-day basis.
And Mr Booth has told Chad that he hoped fans would end their protests 'because ultimately it doesn't do the club any good'.
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