mines

Scientists at the University of Arizona (USA) have discovered an interesting thing, in an old coal mine in Louisiana state, bacteria based on CO2 and coal has produced natural gas

There are animals that can detect mines and explosives faster and more accurately than machines and humans.

People living near coal mines in China are suffering from severe land subsidence, which requires overcoming tens of billions of USD.

Nine locations were forgotten by French photographer Sylvain Margaine, taking pictures and photo books recently released by Jonglez Publishing.

In the video below, you will see that people built a tunnel in a very simple way, without using any adhesive.

As soon as the thief tries to move the vehicle, the hammer will trigger the bullet / explosive detonator to produce a sound of up to 150 dB.

Previously, Colombian police used a sniffer dog, but the weight of the dog would normally trigger the explosives. Now, they decided to pick a mouse because it was lightweight, less