It explains a bit about the Methane levels - the part I found very interesting was:
"Methane gas is explosive in atmospheric ratios between 5% and 15%. In coal mines in the UK, we aim for less than 1% methane. At 1.25%, the power automatically cuts off, and at 2%, all miners are evacuated"
I am just speculating here but if PRC operated under a similar system maybe this is why the power went off and the electrician went in to investigate?
PRC Price at posting:
61.0¢ Sentiment: None Disclosure: Held