Almost, but she had a special hatred for the miners.
Partly I think it stemmed from the tories not forgiving the NUM for bringing down Ted Heath. But I think for Thatcher it was what the miners represented: working class solidarity and working class culture.
Sure she needed to break the unions, and that meant above all breaking the NUM, the 'Grenadier Guards' of the TUC. But on a deeper level, she needed to destroy the culture of the traditional working class in order to expand the underclass. The chavs and the asbo generation were her lasting legacy.