User blog comment:ZanyDragon/Weapons design/@comment-94.197.39.189-20131106082033

Ryan Oil could have had a chemical plant to produce plastic and synthetic rubber etc. for diving suits and door seals etc. Things made of wood create a larger, more intensive labour workforce (jobs for the workers). Moulded plastic items require a smaller workforce, but the raw material (crude oil) might be easier to obtain, than wood in Rapture.