| Query | User |
|---|---|
| coal mines of today | entered by user 221089 |
| coal mining companies | entered by user 8266498 |
| coal to electricity | entered by user 3972646 |
| fossil fuel | entered by user 8261863 |
| fossil fuel info | entered by user 7924294 |
| illinois coal mine association | entered by user 233961 |
| naturalgas | entered by user 6447715 |
| oil wells | entered by user 172201 |