How BIG is a Barrel? - Products derived from One Barrel of Crude Oil

Refining crude oil - U.S. Energy Information Administration (EIA)

Petroleum Products - Illinois Petroleum Resources Board

Infographic] What's In A Barrel? Breaking Down Crude Oil Refined Products

Barrel SafeRack's Industrial Index

What Is Crude Oil, and Why Is It Important to Investors?

Inside a Barrel of Crude Oil

How Mineral Base Oils are Made — Twin Specialties Corp.

That Time I Tried to Buy an Actual Barrel of Crude Oil - Bloomberg

Why the US hides 700 million barrels of oil underground

A Barrel of Oil: More Than Just Fuel

The True Cost of a Barrel of Oil - TheGreenAge

Percentage Component/Litres of Petroleum Products from Crude Oil per Barrel

Oil price dips below $50 a barrel, Edmond