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Excerpt from Rudimentary Treatise on the Blasting and Quarrying of Stone: For Building and Other Purposes
The Pownxa and ran charge 17 Strength of Powder used, 17 - Table of Comparative Results of dif fetcht Qualities of Powder, 18.-the Eprouvette Gun, 19. - Table of Experiments on Powder by Bursting of Spherical Case Shells, m. - Advantages of Using Superior Powder, 2l.-mixture of Saw dust with Powder, 22. - Leaving an Air-space adjoining the Charge, 23. - Mixing Quicklime with the Powder, 24. - Mode of operating on the Hard Limestone of Gibraltar, 25.
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