Warren Buffett, the CEO and Chairman of Berkshire Hathaway (BRK.A)/(BRK.B), announced on Thursday to borrow $8 billion of loan for the acquisition of Burlington Northern Santa Fe Corporation (BNI). Berkshire Hathaway, which already owns a 22% stake in Burlington Northern, announced earlier this month it would acquire the rest for a total value of $34 billion. Buffet agreed to pay $100 a share in cash and stock to buy the rest of the company.

The $8 billion loan that will be provided by JPMorgan Chase (JPM) and Wells Fargo (WFC) is intended to be paid back in three years' time.

For Berkshire, the acquisition of Burlington Northern, or BNSF, the second largest railroad, will be its biggest to date. With it, Berkshire is adding a railroad transportation business with its already diverse range of businesses including retail, manufacturing and insurance, as well as several regional electric and gas utilities.

The acquisition is expected to close in early 2010 and is subject to Burlington Northern's shareholder approval. Post acquisition, Burlington Northern will operate from its headquarters as a wholly owned subsidiary of Berkshire Hathaway.

Based in Fort Worth, Texas, Burlington Northern operates one of the largest railroad networks in North America through its subsidiary, with 33,500 route miles covering 28 U.S. states and two Canadian provinces. This network covers two-thirds of the western United States, stretching from major Pacific Northwest and Southern California. The company employs more than 40,000 people.