Please answer the following question: Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Leighton Holdings - Leighton Holdings is a leading international contractor. It is active in the telecommunications engineering and infrastructure building and property mining and resources and environmental services industries. It has operations in Australia South East Asia New Zealand Vietnam China and the Middle East.
A:
Company