Union Pacific Corporation (NYSE:UNP) reported better-than-expected earnings for the third quarter on Thursday, driven by operational efficiency gains and core pricing.The rail transportation company announced net income of $1.8 billion, or$3.01 per diluted share. Including the effect of merger costs of $41 million, adjusted diluted EPS was$3.08, which beat the analyst estimate of $2.99.The company's operating revenue increased 3$6.244 billion, which narrowly missed the analyst estimate of $6.245 bill ...