It had been ascertained that carbonic oxide occurred in certain rocks and minerals, however such gas had never been found as a natural constituent of the atmosphere of mines.
However the gas had never been found as a natural constituent of the atmosphere of mines. It had been ascertained that carbonic oxide occurred in certain rocks and minerals.
It had been ascertained that carbonic oxide occurred in certain rocks and minerals. However the gas had never been found as a natural constituent of the atmosphere of mines.
It had been ascertained that carbonic oxide occurred in certain rocks and minerals. However the gas had never been found as a natural constituent of the atmosphere of mines.