The Quarryman And Contractors Guide Or How to Remove Rock At Least Cost
The Quarryman And Contractors Guide Or How to Remove Rock At Least Cost
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In our eReader you can find the full English version of the book. Read The Quarryman And Contractors Guide Or How to Remove Rock At Least Cost 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 The Quarryman And Contractors Guide Or How to Remove Rock At Least Cost
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To quickly assess the difficulty of the text, read a short excerpt:
37.
FIG. 37.
These four cuts on this page represent a line of holes, which may be any number up to forty holes, all at one shooting with a No. 3 Magneto Electric Battery, and sixty holes with a No. 4 Electric Battery and at any depth, and of different depths, yet they can all be easily fired. A smart movement of such a simple machine as the battery (which will be explained further along) and the above holes can all be fired at same instant, thus securing far better results than could be done by... forty shots fired by fuse, besides being much safer, for if by some carelessness in loading the holes one hole or more fails to explode, there'is no hang" fire Or no danger in going up to it or working around it, as there is no fire in the hole and nothing but electricity or a hard blow on the cap can fire, iti 39 FIG. 38.
Supposing the two holes A i and B i, fig. 39, to be any given depth, say ten feet deep each, and each charged half full with powder, A i having an electric fuse and B i a common fuse, as soon as the fire reaches the powder chamber it ignites the powder in B i, say four feet from bottom, and the first point of rupture is, say four feet from bottom of hole ; hence we often find from one to two feet of hole unex- ploded (see B 2, fig.
What to read after The Quarryman And Contractors Guide Or How to Remove Rock At Least Cost?
You can find similar books in the "Read Also" column, or choose other free books by Arthur Kirk to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
37.
FIG. 37.
These four cuts on this page represent a line of holes, which may be any number up to forty holes, all at one shooting with a No. 3 Magneto Electric Battery, and sixty holes with a No. 4 Electric Battery and at any depth, and of different depths, yet they can all be easily fired. A smart movement of such a simple machine as the battery (which will be explained further along) and the above holes can all be fired at same instant, thus securing far better results than could be done by... forty shots fired by fuse, besides being much safer, for if by some carelessness in loading the holes one hole or more fails to explode, there'is no hang" fire Or no danger in going up to it or working around it, as there is no fire in the hole and nothing but electricity or a hard blow on the cap can fire, iti 39 FIG. 38.
Supposing the two holes A i and B i, fig. 39, to be any given depth, say ten feet deep each, and each charged half full with powder, A i having an electric fuse and B i a common fuse, as soon as the fire reaches the powder chamber it ignites the powder in B i, say four feet from bottom, and the first point of rupture is, say four feet from bottom of hole ; hence we often find from one to two feet of hole unex- ploded (see B 2, fig.
What to read after The Quarryman And Contractors Guide Or How to Remove Rock At Least Cost?
You can find similar books in the "Read Also" column, or choose other free books by Arthur Kirk to read onlineMoreLess
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