| When exploded by electricity, as in the previous case, no flame was produced, nor was the firedamp ignited. |
| They went down the pit and were vulnerable to explosions of firedamp and coal dust, to rock falls and inrushes of clay, sand and water. |
| Next to her is Mr. firedamp, a very absurd person, who thinks that water is the evil principle. |
| Proceeding to the edge of the moat, they fished up Mr. firedamp, who had missed his way back, and tumbled in. |
| Eruptions of natural gas were observed from very early times and the dangers of firedamp in mines were soon realized. |
| As the coal was worked, large cavities were left which filled with firedamp. |
