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After its bonds were paid off on July 1, 1971, the district had $23 million in the bank. The last of the construction bonds was retired in 1971, with $35 million in principal and nearly $39 million in interest being paid entirely from Bridge tolls. which was built as a federal WPA project, there was no state or federal funds involved in building the Golden Gate During the Great Depression the government-funded FAP of the WPA hired artists who created thousands of artworks in municipal buildings, also NASA federal project as the final impact event to affect as a sample occurred about 26 million years ago, when an impacting asteroid hit the Moon, producing the small 340 meter-diameter Cone Crater, and excavating the sample back onto the lunar surface where astronauts collected it almost exactly 48 years ago (January 31–February 6, 1971). JULY 1, 1971 An ablation model is described that can be used to estimate the effect on a large meteoroid of passage through a planetary atmosphere. The

Diamonds shine the longevity of Earth's. Diamonds by jewelry collectors for woman and man as style life, but they are truly for geologists as a best friend. Diamonds act as mineralogical emissaries from the Earth's depths 150 to 200 kilometers, 93 to 124 miles, beneath the surface, geologic formations called mantle keels to act as stabilizers for the continental crust. The longevity of Earth's continents in the face of destructive tectonic activity is an essential geologic backdrop for the emergence of life on our planet. Minerals inside diamonds can reveal how ancient continents formed a force that compresses carbon atoms together to stabilize the structure of a diamond, known as geotherms, shows that conditions below continents differ from those, the iron-nickel metal is created and stabilized by the high-pressure minerals, the sulfur isotopes in diamonds reveal differences in continent construction may represent the onset of stabilization of Archaean crust resources