Marmon Crane Services, Inc. is a business sector within The Marmon Group and a Berkshire Hathaway company. The Marmon Group is an international association of about 140 manufacturing and service businesses that operate independently within 11 diverse, stand-alone business sectors, with collective revenues of approximately US $7 billion. Berkshire Hathaway and its subsidiaries engage in a number of diverse business activities including property and casualty insurance and reinsurance, utilities and energy, finance, manufacturing, retailing and services. Common stock of Berkshire Hathaway is listed on the New York Stock Exchange, trading symbols BRK.A and BRK.B. Marmon Crane Services companies include Sterling Crane (Canada and USA); Advantage Crane (Canada); Joyce Crane (USA); WGC Cranes (Australia); and Freo Group Pty Ltd (Australia).