Category talk:Oil and gas companies of the Faroe Islands

Oil companies in the country x will generally be in Companies of the country in x as well as Oil companies by country, which works as multiple hierarchies for categorisation. So even only one oil company per country becomes part of a series. Using categories to place these in multiple other categories. Same system is used for oil companies of all other countries.Beagel 16:00, 11 May 2007 (UTC)