“In this new study, the researchers responded to reports of large amounts of hydrogen seeping through vents and bubbling up in drainage pools in the mine; several explosions have been reported. They measured the seepage at multiple sites in the mine and used the results to produce an estimate of the total amount of hydrogen escaping—their numbers indicated that approximately 200 metric tons escape the mine every year, making it the largest natural flow ever documented.
The research team concludes that new technology is required to take advantage of such reservoirs in order to capture vast amounts of hydrogen in a clean and economical way, perhaps reducing reliance on carbon-based fuels.”
From Phys.org.