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I'm starting to purchase some relatively expensive gemstones. I wanted to know how I could be sure of what I was purchasing when there are some misleading trade names and vendors that may not ask as many questions of their supplier as they should.
Calculating the specific gravity of your new sparklies is a good method and can be done fairly inexpensively.
blog.autochthonous-evolved.com/2013/04/making-sure-your-g...
Source: en.wikipedia.org/wiki/Hoover_Dam
Hoover Dam is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between the U.S. states of Nevada and Arizona. Constructed between 1931 and 1936, during the Great Depression, it was dedicated on September 30, 1935, by President Franklin D. Roosevelt. Its construction was the result of a massive effort involving thousands of workers, and cost over 100 lives. In bills passed by Congress during its construction, it was referred to as the Hoover Dam, after President Herbert Hoover, but was named Boulder Dam by the Roosevelt administration. In 1947, the name Hoover Dam was restored by Congress.
Since about 1900, the Black Canyon and nearby Boulder Canyon had been investigated for their potential to support a dam that would control floods, provide irrigation water, and produce hydroelectric power. In 1928, Congress authorized the project. The winning bid to build the dam was submitted by a consortium named Six Companies, Inc., which began construction in early 1931. Such a large concrete structure had never been built before, and some of the techniques used were unproven. The torrid summer weather and lack of facilities near the site also presented difficulties. Nevertheless, Six Companies turned the dam over to the federal government on March 1, 1936, more than two years ahead of schedule.
Hoover Dam impounds Lake Mead and is located near Boulder City, Nevada, a municipality originally constructed for workers on the construction project, about 30 mi (48 km) southeast of Las Vegas, Nevada. The dam's generators provide power for public and private utilities in Nevada, Arizona, and California. Hoover Dam is a major tourist attraction, with 7 million tourists a year. The heavily traveled U.S. Route 93 (US 93) ran along the dam's crest until October 2010, when the Hoover Dam Bypass opened.
Source: hoover.archives.gov/hoovers/hoover-dam
85 years after its completion, Hoover dam is still considered an engineering marvel. It is named in honor of President Herbert Hoover, who played a crucial role in its creation.
For many years, residents of the American southwest sought to tame the unpredictable Colorado River. Disastrous floods during the early 1900’s led residents of the area to look to the federal government for aid, and experiments with irrigation on a limited scale had shown that this arid region could be transformed into fertile cropland, if only the river could be controlled. The greatest obstacle to the construction of such a dam was the allocation of water rights among the seven states comprising the Colorado River drainage basin. Meetings were held in 1918, 1919 and 1920, but the states could not reach a consensus.
Herbert Hoover had visited the Lower Colorado region in the years before World War I and was familiar with its problems and the potential for development. Upon becoming Secretary of Commerce in 1921, Hoover proposed the construction of a dam on the Colorado River. In addition to flood control and irrigation, it would provide a dependable supply of water for Los Angeles and Southern California. The project would be self-supporting, recovering its cost through the sale of hydroelectric power generated by the dam.
In 1921, the state legislatures of the Colorado River basin authorized commissioners to negotiate an interstate agreement. Congress authorized President Harding to appoint a representative for the federal government to serve as chair of the Colorado River Commission and on December 17, 1921, Harding appointed Hoover to that role.
When the commission assembled in Santa Fe in November 1922, the seven states still disagreed over the fair distribution of water. The upstream states feared that the downstream states, with their rapidly developing agricultural and power demands, would quickly preempt rights to the water by the “first in time, first in right” doctrine. Hoover suggested a compromise that the water be divided between the upper and lower basins without individual state quotas. The resulting Colorado River Compact was signed on November 24, 1922. It split the river basin into upper and lower halves with the states within each region deciding amongst themselves how the water would be allocated.
A series of bills calling for Federal funding to build the dam were introduced by Congressman Phil D. Swing and Senator Hiram W. Johnson between 1922 and 1928, all of which were rejected. The last Swing-Johnson bill, titled the Boulder Canyon Project Act, was largely written by Hoover and Secretary of the Interior Hubert Work. Congress finally agreed, and the bill was signed into law on December 21, 1928 by President Coolidge. The dream was about to become reality.
On June 25, 1929, less than four months after his inauguration, President Herbert Hoover signed a proclamation declaring the Colorado River Compact effective at last. Appropriations were approved and construction began in 1930. The dam was dedicated in 1935 and the hydroelectric generators went online in 1937. In 1947, Congress officially "restored" Hoover's name to the dam, after FDR's Secretary of the Interior tried to remove it. Hoover Dam was built for a cost of $49 million (approximately $1 billion adjusted for inflation). The power plant and generators cost an additional $71 million, more than the cost of the dam itself. The sale of electrical power generated by the dam paid back its construction cost, with interest, by 1987.
Today the Hoover Dam controls the flooding of the Colorado River, irrigates more than 1.5 million acres of land, and provides water to more than 16 million people. Lake Mead supports recreational activities and provides habitats to fish and wildlife. Power generated by the dam provides energy to power over 500,000 homes. The Hoover Compromise still governs how the water is shared.
Additional Foreign Language Tags:
(United States) "الولايات المتحدة" "Vereinigte Staaten" "アメリカ" "美国" "미국" "Estados Unidos" "États-Unis"
(Nevada) "نيفادا" "内华达州" "नेवादा" "ネバダ" "네바다" "Невада"
(Arizona) "أريزونا" "亚利桑那州" "एरिजोना" "アリゾナ州" "애리조나" "Аризона"
(Hoover Dam) "سد هوفر" "胡佛水坝" "हूवर बांध" "フーバーダム" "후버 댐" "Гувера" "Presa Hoover"
Driving up the Icicle,
Our local paradise river,
With magnificent mountains.
There, before the turn,
One meets the Glacial Erratic,
Where some Pine Cone
Dared to start...perhaps some shade, some moisture...
Now they are wed,..
Like leaning parners having to
hold on carefully,
Too much gravity, Crunch.
Not enough photosynthis in the needles, Crunch.
Smile when you go buy,
In case you've forgotten life is a struggle.
Snapseed killed EXIF - here it is:
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i never saw you up there
cause you never made a sound
if i knew what you were up to
i woulda shot you down
you were working on the inside
disconnecting the alarm
i was messing up your signals
trying to turn me off
over the hills the frequency's breaking down
don't wanna guess but i think it's time we turned around
i'm soft, but i'll be alright
soft, yeah i'll be alright
soft, yeah i'll be alright
soft...
hey would you say i'm on the rebound?
watch me fall at the speed of sound
your trigger finger's cocked and i'm feeling weak
open wide, i'm paralyzed
we're getting high but we're still feeling down
gravity has a way of pinning us to the ground