[thackney]

full Genealogy of Major U.S. Refiners with notes and sources
http://www.eia.gov/finance/genealogy/pdf/genealogy_refiners.pdf

[Daveinyork]

Forgot to mention government regulation which makes it too expensive for smaller companies.

[Free Vulcan]

Nice graphics. Boils it down nicely.

[B4Ranch]

---------------Ten Corporations Control Almost Everything You Buy----This Chart Shows How ------------

[B4Ranch]

I see your chart and mine (Post 10) simply as Agenda 21 in the works. Cut down on the number of people at the top so that government, which will be the United Nations, bureaucrats can easily deal with them.