A Treatise on Mine-surveying |
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Results 1-5 of 60
Page viii
... underground observations with the dial , Taking vertical angles , Keeping the dialling book , ( 2. ) Surface - surveys with the miner's dial , ( 3. ) Colliery - surveys with the miner's dial , CHAPTER IV . THE VARIATION OF THE MAGNETIC ...
... underground observations with the dial , Taking vertical angles , Keeping the dialling book , ( 2. ) Surface - surveys with the miner's dial , ( 3. ) Colliery - surveys with the miner's dial , CHAPTER IV . THE VARIATION OF THE MAGNETIC ...
Page ix
... underground , Surveying in inclined shafts , The vernier compass , PAGE 60 60 61 62 63 64 65 66 74 74 CHAPTER VII . THE GERMAN DIAL . Invention of the German dial , 77 Measuring station - lines , 77 The clinometer , 78 Use of the ...
... underground , Surveying in inclined shafts , The vernier compass , PAGE 60 60 61 62 63 64 65 66 74 74 CHAPTER VII . THE GERMAN DIAL . Invention of the German dial , 77 Measuring station - lines , 77 The clinometer , 78 Use of the ...
Page xi
... UNDERGROUND- AND SURFACE - SURVEYS . Methods employed , · 1. By means of an adit level , 2. By means of two shafts , 3. By means of one shaft , • 4. By means of a transit - instrument , 4a . The Severn tunnel method , 5. By means of a ...
... UNDERGROUND- AND SURFACE - SURVEYS . Methods employed , · 1. By means of an adit level , 2. By means of two shafts , 3. By means of one shaft , • 4. By means of a transit - instrument , 4a . The Severn tunnel method , 5. By means of a ...
Page xii
... underground traverse on the surface , 213 Setting - out railways to mines , 213 Ranging curves , 213 Cross - sections , 217 Driving levels underground , 217 Curves for engine planes , 219 Setting - out tunnels , 219 CHAPTER XVII . MINE ...
... underground traverse on the surface , 213 Setting - out railways to mines , 213 Ranging curves , 213 Cross - sections , 217 Driving levels underground , 217 Curves for engine planes , 219 Setting - out tunnels , 219 CHAPTER XVII . MINE ...
Page 1
... underground workings of a mine , and , secondly , the mine - buildings at the surface and the mine- concession or royalty . Thirdly , it requires an accurate method of connecting the underground- and surface - surveys . Trust- worthy ...
... underground workings of a mine , and , secondly , the mine - buildings at the surface and the mine- concession or royalty . Thirdly , it requires an accurate method of connecting the underground- and surface - surveys . Trust- worthy ...
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Common terms and phrases
accuracy accurate adjusted back-sight base-line bearing bore-hole brass calculated centre chain City Guilds clamped clinometer coal colliery collimation colour compass compass-box contour lines cord corner cosec cotan cross-wires curve determined direction distance employed equal error fathoms feet fixed fore-sight glass graduated ground height hole horizontal circle inches inches in diameter inclination instrument intersection latitude length lode magnetic bearing magnetic meridian magnetic-needle marked means measured method metres mine-surveying miner's dial mines needle observations obtained offsets Ordnance Survey parallel parallel ruler perpendicular placed plane plate plotting plumb-bob plumb-line plummet position protractor represented right angles safety-lamp scale seam shaft side Silver King spirit-level square staff station station-line strike and dip surface surface-surveys survey tacheometer tacheometry taken tangent screw telescope theodolite transit-theodolite traverse triangle tripod tube underground vernier vernier-plate vertical angles wire yards zero