INDEX.
Reading edition
Appliances for firing blasting charges, 42
Auxiliary tools, 17
Batteries, firing, 62
Beche, 21
Bichromate firing battery, 62
Bits, borer, 31
Blasting gear, sets of, 22
—— sticks, 51
—— subaqueous, 164
Borer-bits, 31
Boring under water, 170
—— the shot-holes, 128, 142
Bornhardt’s firing machine, 57
Brain’s powder, 105
Bull, 20
Cables, 53
Cellulose dynamite, 105
Charging and firing, 150
—— the shot-holes, 132
Chemical compounds, 81
Claying iron, 20
Conditions of disruption, 110
Connecting wires, 52
Cotton powder, 103
Darlington drill, 26
Detonation, 95
Detonators, 54
Dislodged rock, removal of, 154
Disruption, conditions of, 110
—— force required to cause, 107
Division of labour, 155
Drills, dimension of, 6
—— form of, 4
—— hand, 1
—— hardening and tempering, 10
—— making and sharpening, 7
—— sets of, 13
Drivings, examples of, 157
Dubois-François carriage, 39
Dynamite, 100
—— composition of, 87
Electrical firing, advantage of, 153
Electric fuses, 47
—— tension fuse, 50
Example of a heading, 115
Examples of drivings, 157
Explosion, force developed by, 72
—— heat liberated by, 67
—— gases generated by, 69
—— nature of, 64
Explosive agents, nature of, 76
Firing batteries, 62
—— blasting charges, appliances for, 42
—— by electricity, 138
—— machines, 55
—— machine, Bornhardt’s, 57
—— —— induction coil, 61
—— —— Mowbray’s, 59
—— —— Siemens’, 60
—— —— Smith’s, 58
—— points of the common explosive agents, 102
—— table for frictional electric machine, 140
—— the charges, 137
Force developed by an explosion, 72
—— developed by gunpowder, 88
—— required to cause disruption, 107
Fuse, safety, 45
Fuses, electric, 47
Gases generated by an explosion, 69
Gun-cotton, 99
—— constitution of, 81
Gunpowder, 97
—— composition of, 80
—— force developed by, 88
Hammers, 14
—— patterns of, 15
Hand boring, 128
Heading, example of, 115
Heat, action of, in firing, 92
—— liberated by an explosion, 67
—— measure of, 66
—— specific, 66
Hoosac Tunnel, 158
Induction firing coils, 61
Joint and bedding planes, 118
Jumper, 3
Labour, division of, 155
Line of least resistance, 106
Lithofracteur, 104
Machine boring, 142
—— rock-drills, 23
Machines, firing, 55
Means of firing the common explosive agents, 92
Measure of heat, 66
Mechanical mixture, 76
Mowbray’s firing machine, 59
Musconetcong Tunnel, 159
Nature of an explosion, 64
Nitrated gun-cotton, 103
Nitro-glycerine, constitution of, 86
Obstructions in water-courses, 178
Operations of rock blasting, 128
Preparation of subaqueous charges, 164
Principles of blasting, 106
Rammer, 20
Relative strength of gunpowder, gun-cotton, and dynamite, 91
—— —— of the common explosive agents, 88
Removing dislodged rock, 154
Rock-drill supports, 34
Safety Fuse, 45
St. Gothard Tunnel, 157
Schultze’s powder, 104
Scraper, 18
Shot-holes, boring, 128, 142
—— charging, 132
Siemens’ firing machine, 60
Silvertown firing battery, 62
Sledges, 14
—— North of England, 17
—— North Wales, 17
—— South Wales, 16
Smith’s firing machine, 58
Some properties of the common explosive agents, 97
Some varieties of the nitro-cellulose and the nitro-glycerine compounds, 103
Squibs, 44
Steel, hardening and tempering, 9
Stemmer, 20
Sticks, blasting, 51
Stretcher bar, 37
Subaqueous blasting, 164
—— charges, preparation of, 164
Submarine rocks, removal of, 173
Swab-stick, 19
Tamping, 121
Tonite, 103
Water, boring under, 170
Water-courses, obstructions in, 178
Waterproofing composition, 165
Weight of explosive in bore-hole, table of, 109
Wires, connecting, 52
LONDON: PRINTED BY WM. CLOWES AND SONS, STAMFORD STREET AND CHARING CROSS.
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