Modern Tunnel Practice Illustrated By Examples Taken From Actual Recent Work in
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In our eReader you can find the full English version of the book. Read Modern Tunnel Practice Illustrated By Examples Taken From Actual Recent Work in 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 Modern Tunnel Practice Illustrated By Examples Taken From Actual Recent Work in
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75 ; car men, $2. 50 $3, 772. 50 168 days Day foreman $4. 00 per lo-hour day 672. 00 134 days Night foreman 3. 25 per lo-hour day 435-5O Total labor cost $4, 880. 00 $4. 153 11, 150 Ibs. Powder 1, 226. 50 1. 043 26, 500 ft. Fuse 79-50 . 068 35 boxes Lion caps 35-QO . 030 800 Ibs. Candles 96. 00 . 082 Total cost $6, 317. 00 $5. 376 3, 258 holes drilled, or 2. 77 per foot ; using average of 3. 42 pounds of powder for each blasting hole.
Hand Work in Tunnel-driving The following cost data re- fer ...to a short tunnel on the W. Va. & P. R. R. , driven in 1891. The tunnel was only 624 feet long, and was driven through a soft blue-clay shale, showing little stratification and practically dry. The tunnel had a span of 23 feet, was 13 feet from the floor to springing line, and the arch was a full center of n^ feet radius. The heading area was 208 square feet; bench area, 299 square feet, or 507 square feet in all.
The work was done entirely by hand, with the following force: On heading, i foreman, 8 miners, 6 muckers, and one boy; on bench, I foreman, 8 miners, 10 muckers and one boy.
What to read after Modern Tunnel Practice Illustrated By Examples Taken From Actual Recent Work in?
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To quickly assess the difficulty of the text, read a short excerpt:
75 ; car men, $2. 50 $3, 772. 50 168 days Day foreman $4. 00 per lo-hour day 672. 00 134 days Night foreman 3. 25 per lo-hour day 435-5O Total labor cost $4, 880. 00 $4. 153 11, 150 Ibs. Powder 1, 226. 50 1. 043 26, 500 ft. Fuse 79-50 . 068 35 boxes Lion caps 35-QO . 030 800 Ibs. Candles 96. 00 . 082 Total cost $6, 317. 00 $5. 376 3, 258 holes drilled, or 2. 77 per foot ; using average of 3. 42 pounds of powder for each blasting hole.
Hand Work in Tunnel-driving The following cost data re- fer ...to a short tunnel on the W. Va. & P. R. R. , driven in 1891. The tunnel was only 624 feet long, and was driven through a soft blue-clay shale, showing little stratification and practically dry. The tunnel had a span of 23 feet, was 13 feet from the floor to springing line, and the arch was a full center of n^ feet radius. The heading area was 208 square feet; bench area, 299 square feet, or 507 square feet in all.
The work was done entirely by hand, with the following force: On heading, i foreman, 8 miners, 6 muckers, and one boy; on bench, I foreman, 8 miners, 10 muckers and one boy.
What to read after Modern Tunnel Practice Illustrated By Examples Taken From Actual Recent Work in?
You can find similar books in the "Read Also" column, or choose other free books by David Mcneely Stauffer to read onlineMoreLess
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