DUBLIN-BASED oil and gas exploration company Tuskar Resources has appointed Mr Howard Wolf as non-executive chairman of the company. Mr Wolf replaces Mr Duncan McGregor who has been chairman since 1992. Mr Wolf is a senior partner of the international law firm Fulbright & Jaworski and a director of CAMAC International. He is also chairman, of, London-listed international Tool & Supply and a non-executive director of Simmons & Company.