Hand book of Explosives for Farmers, Planters, Ranchers; How to Clear Land ..
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In our eReader you can find the full English version of the book. Read Hand book of Explosives for Farmers, Planters, Ranchers; How to Clear Land .. 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 Hand book of Explosives for Farmers, Planters, Ranchers; How to Clear Land ..
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To quickly assess the difficulty of the text, read a short excerpt:
The proper place to locate the charge so that it will shatter a maximum area of subsoil, is two to three feet be- low the surface if the hardpan is thm, and the holes are placed four to eight feet apart. In thick hardpan with the holes fifteen to thirty feet apart, the charge should be located about a foot above the bottom of the hardpan.
In California, hardpan has been blasted very effectively and cheaply with Judson Powder R. R. P. (5 ^( ). A slow-acting dyna- mite does better work than a qui...ck one, because its effect is more spreading. The difference in the results of the use of slow explosives and of quick ones on hardpan is illustrated on pages 74, 76 and 78.
The exact size of the charge, the proper spacing of the holes, and their depth, depend largely on the kind of subsoil to be broken, its thickness and depth below the surface.
When the bore holes are fifteen feet or more apart, it is best to explode a number of charges simultaneously by means of electricity, but when the bore holes are closer, it answers the purpose about as well to explode the charges with fuse and blasting caps.
What to read after Hand book of Explosives for Farmers, Planters, Ranchers; How to Clear Land ..?
You can find similar books in the "Read Also" column, or choose other free books by Du Pont De Nemours, E. I., Powder Co., Wilmington, Del. [from Old Catalog] to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The proper place to locate the charge so that it will shatter a maximum area of subsoil, is two to three feet be- low the surface if the hardpan is thm, and the holes are placed four to eight feet apart. In thick hardpan with the holes fifteen to thirty feet apart, the charge should be located about a foot above the bottom of the hardpan.
In California, hardpan has been blasted very effectively and cheaply with Judson Powder R. R. P. (5 ^( ). A slow-acting dyna- mite does better work than a qui...ck one, because its effect is more spreading. The difference in the results of the use of slow explosives and of quick ones on hardpan is illustrated on pages 74, 76 and 78.
The exact size of the charge, the proper spacing of the holes, and their depth, depend largely on the kind of subsoil to be broken, its thickness and depth below the surface.
When the bore holes are fifteen feet or more apart, it is best to explode a number of charges simultaneously by means of electricity, but when the bore holes are closer, it answers the purpose about as well to explode the charges with fuse and blasting caps.
What to read after Hand book of Explosives for Farmers, Planters, Ranchers; How to Clear Land ..?
You can find similar books in the "Read Also" column, or choose other free books by Du Pont De Nemours, E. I., Powder Co., Wilmington, Del. [from Old Catalog] to read onlineMoreLess
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