Q: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. Ruston-Bucyrus -  Ruston-Bucyrus Ltd was an engineering company established in 1930 and jointly owned by Ruston and Hornsby based in Lincoln England and Bucyrus-Erie based in Bucyrus Ohio the latter of which had operational control and into which the excavator manufacturing operation of Ruston and Hornsby was transferred.
A:
Company