| 1 | This old coal face is to be reworked next week. | |
| 2 | We have raised the coal output by using better mining methods. | |
| 3 | Mountaintop removal mining is considered the fastest, most cost-effective way to mine coal reserves. | |
| 4 | These include coal mining, quarrying, oil drilling, and the injection of wastewater into the ground. | |
| 5 | Given the environmental and safety issues, why do we still mine coal? |