MOSCOW, March 29 (Reuters) – Rusal America, a subsidiary of Russian aluminium producer Rusal, will apply for an exemption from U.S. import tariffs on aluminium, the Interfax news agency quoted Rusal as saying on Thursday. The United States imposed duties of 25 percent on steel and 10 percent on aluminium on imports from several countries from March 23. Russia is preparing a list of restrictions on imported products from the United States in response to U.S tariffs.