East Resources, Inc., was an oil and gas exploration and production company with a focus on unconventional shale oil and gas resources in the United States.
East Resources, Inc., was an oil and gas exploration and production company with a focus on unconventional shale oil and gas resources in the United States. (en)
East Resources, Inc., was an oil and gas exploration and production company with a focus on unconventional shale oil and gas resources in the United States. (en)