A Treatise on Mine-surveying |
From inside the book
Results 1-5 of 52
Page vi
... drawn for this book . The Appendix of examination - questions and exercises for plotting has been culled from recent papers set at the examina- tions of the Science and Art Department , of the City and Guilds of London Institute , of ...
... drawn for this book . The Appendix of examination - questions and exercises for plotting has been culled from recent papers set at the examina- tions of the Science and Art Department , of the City and Guilds of London Institute , of ...
Page xiii
... draw caused by working coal , CHAPTER XVIII . MINE PLANS . PAGE 237 239 241 Plan and section , ( a . ) Metalliferous mines , ( b . ) Colliery plans , Surface plans , ( c . ) American colliery plans , Importance of correct sections , 246 ...
... draw caused by working coal , CHAPTER XVIII . MINE PLANS . PAGE 237 239 241 Plan and section , ( a . ) Metalliferous mines , ( b . ) Colliery plans , Surface plans , ( c . ) American colliery plans , Importance of correct sections , 246 ...
Page 1
... drawn , and its area calculated . All surveys are conducted upon nearly the same principles , the difference consisting in the style of instruments used in the work , and the amount of attention bestowed on the various details . The ...
... drawn , and its area calculated . All surveys are conducted upon nearly the same principles , the difference consisting in the style of instruments used in the work , and the amount of attention bestowed on the various details . The ...
Page 2
... drawn in the reign of the king Mineptah , 1,400 years before the Christian era . Land - surveying was first practised in Egypt . There the annual overflows of the Nile , and the consequent deposit of mud , destroyed the land - marks of ...
... drawn in the reign of the king Mineptah , 1,400 years before the Christian era . Land - surveying was first practised in Egypt . There the annual overflows of the Nile , and the consequent deposit of mud , destroyed the land - marks of ...
Page 5
... drawn in the middle plane . Its dip is the inclination downwards measured in degrees from the horizontal . As the dip of veins is usually great , it is somtimes measured from the vertical , and is then termed underlie or hade . The ...
... drawn in the middle plane . Its dip is the inclination downwards measured in degrees from the horizontal . As the dip of veins is usually great , it is somtimes measured from the vertical , and is then termed underlie or hade . The ...
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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