As calls to blow up the Board of Revision of Taxes rumbled throughout City Hall yesterday, Mayor Nutter huddled with City Council leaders to plan what appears to be a coordinated assault on the beleaguered agency.

As calls to blow up the Board of Revision of Taxes rumbled throughout City Hall yesterday, Mayor Nutter huddled with City Council leaders to plan what appears to be a coordinated assault on the beleaguered agency.