Tanks hold oil at the Cushing terminal in Oklahoma. An economist and analysts expect investor interest in the energy industry will return. [THE OKLAHOMAN ARCHIVES]
A rig drills a well in Ohio. Exploration and production companies exposed to changing commodity prices are perceived by many investors to have more risk than other types of public companies. [THE OKLAHOMAN ARCHIVES]
Commodity prices for oil have reached record highs and record lows. [THE OKLAHOMAN ARCHIVES]
A worker checks production tanks at an Oklahoma location. [THE OKLAHOMAN ARCHIVES]