The summer of 1830 I... blasted the tunnel through the rock to take water from the dam above the falls for the mill... In 1831 we lowered the tunnel four feet, and built a new dam across the creek.
Sentiment: NEGATIVE
On the 27th we came to the Cascade Rapids. The first or Little Cascade has about two feet fall, the second or Grand Cascade, a mile farther, is about a six foot sheer drop.
As the work proceeded we found that the western end of the cutting receded under the slope of the rock, and thus was partly roofed over by the overhanging rock.
I want to build a machine that can drill wells for water. With this problem of water in many places in Africa, we need to find a solution for how you can dig wells so you can be pumping water from deeper places.
I was trained in seismic prospecting. We'd drill a deep hole and put dynamite in the bottom and blow it up remotely, which would give you a cross-sectional picture of the subsurface, which tells you where to drill.
This is our history - from the Transcontinental Railroad to the Hoover Dam, to the dredging of our ports and building of our most historic bridges - our American ancestors prioritized growth and investment in our nation's infrastructure.
What was once underground is now coming to the surface.
Dams have harmed our wildlife and made rivers less useful for recreation.
The truth is you can't get more water from reservoirs that are empty.
There is a light at the end of the tunnel... hopefully its not a freight train!
There is a preliminary belief that Tuolumne River water could be captured by other reservoirs that are downstream from Hetch Hetchy, the Cherry and Don Pedro reservoirs for instance. Furthermore, any shortfalls could be supplied via greater conservation efforts, newly discovered groundwater supplies, and water purchases when necessary.
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