Which of these is not an ideal use for a former quarry?

Which of these is not a negative issue in an active quarry?

Which of these is Ireland’s main natural gas field?

Natural gas __________________________.

What is the most common fuel source found on the Irish mainland?

Which of these is not a fossil fuel?

___________ involves boring through rock to reach resources such as oil and gas.

What is the most common method of extracting building materials?

What are the minerals mined at Navan, Co. Meath?