On the Accidents which occur in the Mines of Cornwall, in the consequence of the premature Explosion of Gunpowder in blasting Rocks & the Methods to be adopted for preventing it, by the introduction of a Safety Bar, & an instrument termed the Shifting Cartridge

Paris, A J

Transactions of the Royal Geological Society of Cornwall, Vol 1, p78 - 97

On the Accidents which occur in the Mines of Cornwall, in the consequence of the premature Explosion of Gunpowder in blasting Rocks & the Methods to be adopted for preventing it, by the introduction of a Safety Bar, & an instrument termed the Shifting Cartridge, J A Paris.