Play the video to find out about coal is made - can you work out why coal is running out?

Coal mining has always been a dangerous job however over time the work has become safer compared to early coal mining systems. Watch this clip to find out how they first mined coal.

Watch this clip which shows the process of the Hatfield Colliery in Doncaster.

This clip shows what the Hatfield Colliery looks like today. See how it has changed from the video above.