coal samples (IMAGE)

Penn State

coal samples

Caption

Max Lloyd, assistant research professor of geosciences at Penn State, tested samples from around the world. From the left are wood, lignite, subbituminous and bituminous coal.

Credit

Patrick Mansell, Penn State

Usage Restrictions

non commercial use only

License

Original content

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.