Cannon
Will your roof withstand flying volcanic rocks?
15 Jun 2017
Geologists are using a vertical cannon to test how different roofing materials - and even hard hats - can withstand the impact of flying volcanic rocks. Video, Audio
Will your roof withstand flying volcanic rocks?
15 Jun 2017
Geologists are using a vertical cannon to test how different roofing materials - and even hard hats - can withstand the impact of flying volcanic rocks.
Video, Audio