<div id="readability-page-1">By Tim McLaughlin Dec. 14 (Reuters) - BNSF Railway, one of the crown jewels of Warren Buffett’s sprawling Berkshire Hathaway conglomerate, calls itself an environmental leader in the U.S. rail industry with the cleanest locomotive fleet in North America. “When you see our orange locomotives’ and freight cars’ steel wheels moving on steel rails, think green,” BNSF says in its latest</div>

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<p>The article by Tim McLaughlin highlights the environmental concerns surrounding the US freight rail industry, particularly BNSF Railway, part of Warren Buffett's Berkshire Hathaway. Despite BNSF's claims of having the cleanest locomotive fleet, the industry is criticized for being dirtier than coal power plants.</p>

- BNSF Railway, part of Berkshire Hathaway, claims to be an environmental leader in the U.S. rail industry.  
- The company highlights its clean locomotive fleet as the cleanest in North America.  
- BNSF promotes its operations by encouraging the perception of its locomotives as environmentally friendly.  

How the US freight rail industry got dirtier than coal power plants