Berkshire Hathaway Inc., together with its subsidiaries, engages in the insurance, freight rail transportation, and utility businesses. The company provides property, casualty, life, accident, and health insurance and reinsurance; operates railroad systems in North America; generates, transmits, stores, and distributes electricity from natural gas, coal, wind, solar, hydroelectric, nuclear, and geothermal sources; operates natural gas distribution and storage facilities, interstate pipelines, liquefied natural gas facilities, and compressor and meter stations; and holds interest in coal mining assets. It manufactures boxed chocolates and other confectionery products; specialty chemicals, metal cutting tools, and components for aerospace and…