| Robert Brough Smyth - 1869 - Страниц: 694
...so great, that it will kill a man instantaneously, and tear down a hill more rapidly than could 100 men with shovels. " One or two men are required to...bottom of the bank again, and so on. If the bank is 150 feet high, the mass of earth that tumbles down is of course immense, and the pipemen must stand... | |
| Robert Brough Smyth - 1869 - Страниц: 712
...so great, that it will kill a man instantaneously, and tear down a hill more rapidly than could I oo men with shovels. " One or two men are required to...its bottom until a large mass of dirt tumbles down, und then they wash this all away into the sluice; when they commence at the bottom of the bank again,... | |
| John Shertzer Hittell - 1874 - Страниц: 490
...the water, it is a matter of great importance to have the hose as strong as possible ; and for tliis purpose, in some claims, it is surrounded by iron...shovels. One or two men are required to hold the pipe when it is to be held ; but usually it is supported on a frame-work. These remarks apply, however,... | |
| 1885 - Страниц: 816
...by four ropes which run perpendicularly down. The rings are about three inches apart. The "criuoliue hose," thus made, is very flexible, and will support...usually turn the stream upon the bank near its bottom unt^ a large mass of dirt tumbles down, and then they wash this all away into the sluice; when they... | |
| Lani Ah Tye Farkas - 1998 - Страниц: 180
...required to hold it. The force from the stream of water was so great that it could kill a man instantly and tear down a hill more rapidly than could a hundred men with shovels. The pipe concentrated powerful jets of water on a specific area, and washed gold-bearing earth or gravel... | |
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