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“Dimension Stone Quarrying.–The Blasting Process.”
There are doubtless many persons, some of them, perhaps, not without a knowledge of quarrying, who have read extracts from the Census Reports, and have noted frequent reference to a system of blasting known as the Knox system. This system is a recent invention, no mention was made of it in the tenth census, and no description has yet been given of it in any publications on quarrying. The first work done by this method was in 1885, and at the close of that year two quarries had adopted it. In 1886 it was used in twenty quarries. In 1887 in forty-four, in 1888 in upward of one hundred, and at the present time about three hundred quarries have adopted it.
“Dimension Stone Quarrying.–The Blasting Process.”
There are doubtless many persons, some of them, perhaps, not without a knowledge of quarrying, who have read extracts from the Census Reports, and have noted frequent reference to a system of blasting known as the Knox system. This system is a recent invention, no mention was made of it in the tenth census, and no description has yet been given of it in any publications on quarrying. The first work done by this method was in 1885, and at the close of that year two quarries had adopted it. In 1886 it was used in twenty quarries. In 1887 in forty-four, in 1888 in upward of one hundred, and at the present time about three hundred quarries have adopted it.
“Dimension Stone Quarrying.–The Blasting Process.”
Saunders, William L. (author)
Transactions of the American Society of Civil Engineers ; 25 ; 501-514
2021-01-01
141891-01-01 pages
Article (Journal)
Electronic Resource
Unknown
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