"BNSF was the major contributor adding $US 885 million to net earnings since our acquisition, including $603 million during the second quarter," the company said in an earnings statement this week. Berkshire paid $26.5 billion in February for the share of BNSF it did not already own. BNSF says second quarter revenues rose 23.5% year-on-year to $US 4.09 billion, with intermodal volumes growing 9.7% and bulk and wagonload traffic up 11.6%.