A FREIGHT TRAIN slammed into the rear of a coal train before dawn Thursday, injuring four people and setting the wreckage of nine cars afire, authorities said in San Bernardino, Calif. . . . CHINA FIRED four top provincial leaders Thursday, expelling them from the Communist Party, and it confirmed the arrests of three others "directly responsible" for the deaths of 327 schoolchildren and teachers in the country's worst fire in 15 years.