Warren Buffett：Berkshire Hathaway 2012 Letter, Additional Excerpt 2

Marmon is a diverse enterprise, comprised of about 150 companies operating in a wide variety of industries. Its largest business involves the ownership of tank cars that are leased to a variety of shippers, such as oil and chemical companies. Marmon conducts this business through two subsidiaries, Union Tank Car in the U.S. and Procor in Canada.

Source： https://www.berkshirehathaway.com/letters/2012ltr.pdf
Locator：2012 Chairman's Letter, additional excerpt 2 · Verified：2026-10-19 · Verification：Short excerpt

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