Nanoparticles from evaporite materials in Colombian coal mine drainages

Modeling Selenite Sorption in Reclaimed Coal Mine Soil Materials

Canaries in the coal mine.

Up until 30 years ago, coalminers relied on canaries as warning systems against harmful gases and pollutants underground. The miners listened for birdsong and if the birds fell silent, then they knew there was danger to their health and to take action. Today we have much more sophisticated information and reporting on the quality of air. We know precisely the levels and composition of pollutant...

CO dispersion from a coal fire in a mine entry

Five mine fire experiments were conducted in a 2.08 m high and 2.90 m wide, ventilated mine entry in the National Institute for Occupational Safety and Health (NIOSH)’s Safety Research Coal Mine (SRCM) to determine the effect of the dispersion of carbon monoxide (CO) on mine fire detection. CO measurements were made at distances from 7.6 m to 45.2 m downwind from the fire with diffusion mode CO...

High-tech coal mine canary.

High-tech coal mine canary One of coal mining's earliest systems for warning of the presence of methane gas, the canary in the coal mine, though low-tech, was extremely effective and rather easy to read: if the bird died, miners had to get out of the shaft. Today, the search for means to monitor for signs of danger continues. At an annual checkup, one could be given a whole battery of tests, ea...

The Canary in the Coal Mine.

Courage/Bravery—Bitty was determined to escape his cage and become free so that he could help the other canaries and the miners. He faced many dangers but never gave up fighting for what he believed. What causes would you fight for? What kind of power do you feel you have to change things that you think are unfair? Do you think that influencing legislators is a good way to change things? Why or...