A Treatise On Slate And Slate Quarrying, Scientific, Practical, And Commercial;
A Treatise On Slate And Slate Quarrying, Scientific, Practical, And Commercial;
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In our eReader you can find the full English version of the book. Read A Treatise On Slate And Slate Quarrying, Scientific, Practical, And Commercial; Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book A Treatise On Slate And Slate Quarrying, Scientific, Practical, And Commercial;
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To quickly assess the difficulty of the text, read a short excerpt:
bridge rails, 6Z. 10*. . . 32 10 400 sleepers, U. 3d 25 Spikes 3 Two weigh-machines and sheds, 20/. . . 40 Smith's shop and tools 100 Small barracks 80 Sundry tools and appliances .... 100 Manager and odd labour, two years . . 300 Contingencies, 10 per cent 272 £2,592 10 of which l,500i. would be spent in the quarry, and the remainder on plant and materials.' y Google 98 SLATE AND SLATE QUAKRYING.
y Google CHAHBEBED QUARBT IN MOUNTAIN. 99 2. Chambered quarry worked underground by means of adits... or levels.
In a quarry of this description the floors answer to the galleries in an open quarry, although if the slate rock be twenty yards or more in thickness, each cham- ber will have in itself two or more galleries or steps.
Fig. 29 is a section of such a quarry worked on three floors from the face of a hill. When the slate rock cannot be approached by levels driven in the direction shown on the figures, these may be driven at right angles, and enter the slate rock on the upper side of the slate bed, at point a, floor 3.
What to read after A Treatise On Slate And Slate Quarrying, Scientific, Practical, And Commercial;?
You can find similar books in the "Read Also" column, or choose other free books by David Christopher Davies to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
bridge rails, 6Z. 10*. . . 32 10 400 sleepers, U. 3d 25 Spikes 3 Two weigh-machines and sheds, 20/. . . 40 Smith's shop and tools 100 Small barracks 80 Sundry tools and appliances .... 100 Manager and odd labour, two years . . 300 Contingencies, 10 per cent 272 £2,592 10 of which l,500i. would be spent in the quarry, and the remainder on plant and materials.' y Google 98 SLATE AND SLATE QUAKRYING.
y Google CHAHBEBED QUARBT IN MOUNTAIN. 99 2. Chambered quarry worked underground by means of adits... or levels.
In a quarry of this description the floors answer to the galleries in an open quarry, although if the slate rock be twenty yards or more in thickness, each cham- ber will have in itself two or more galleries or steps.
Fig. 29 is a section of such a quarry worked on three floors from the face of a hill. When the slate rock cannot be approached by levels driven in the direction shown on the figures, these may be driven at right angles, and enter the slate rock on the upper side of the slate bed, at point a, floor 3.
What to read after A Treatise On Slate And Slate Quarrying, Scientific, Practical, And Commercial;?
You can find similar books in the "Read Also" column, or choose other free books by David Christopher Davies to read onlineMoreLess
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