SCOTT DEPOT, W.Va. (AP) -- Busloads of United Mine Workers of America miners and retirees roared in protest outside Patriot Coal headquarters Monday, as the bankrupt company looks to nix a union contract that includes pension contributions and health benefits. From a makeshift stage on the bed of a tow truck, UMWA President Cecil Roberts bellowed out to a camouflage-clad crowd of 1,500 to 1,800 miners and led them in a march to nearby Patriot headquarters. UMWA packed twenty-two buses of miners from Kentucky, West Virginia, Pennsylvania and elsewhere, according to union spokesman Phil Smith.