In , copper mining in the area expanded with the opening of the Berkeley Pit. The mine took advantage of the existing subterranean drainage and pump network to lower groundwater until , when a new owner suspended operations.
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After the pumps were turned off, water from the surrounding rock basin began seeping into the pit. By the time an astronaut on the International Space Station took this picture on 2 August , water in the pit was more than m ft deep. This image shows many features of the mine workings, such as the terraced levels and access roadways of the open mine pits gray and tan sculptured surfaces.
A large gray tailings pile of waste rock and an adjacent tailings pond appear to the north of the Berkeley Pit.
Color changes in the tailings pond result primarily from changing water depth. Because its water contains high concentrations of metals such as copper and zinc, the Berkeley Pit is listed as a federal Superfund site. Farms in northwest Minnesota viewed from space resemble a patchwork quilt in this 10 September image.
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Fields change hue with the season and with the alternating plots of organic wheat, soybeans, corn, alfalfa, flax, or hay. Although lush green fields dominate the image, some crops have already been harvested leaving squares of tan and brown. This image is a rare satellite view of a cloudless summer day over the entire Great Lakes region. The Great Lakes comprise the largest collective body of fresh water on the planet, containing roughly 18 percent of Earth's supply.
Only the polar ice caps contain more fresh water. The region around the Great Lakes basin is home to more than 10 percent of the population of the United States and 25 percent of the population of Canada. Open water appears blue or nearly black. The pale blue and green swirls near the coasts are likely caused by algae or phytoplankton blooms, or by calcium carbonate chalk from the lake floor. A view of Rockport, Massachusetts, some 40 km 25 mi northeast of Boston, at the tip of the Cape Ann peninsula.
First settled in the 17th century, the town's economy was long based on timber, fishing, and granite quarrying. Today it is a popular tourist site and artists colony. Another view of the harbor at Rockport, Massachusetts, some 40 km 25 mi northeast of Boston, at the tip of the Cape Ann peninsula. The boulder-strewn shoreline accounts for the town's name. Seaside view at Gloucester, Massacusetts. Settled in , the city - long a fishing and seafood center - claims to be America's oldest seaport.
The ship is a replica of the 17th century Mayflower that transported the Pilgrims some of the earliest English settlers to the New World. A couple of the dwellings at Plimouth Plantation, a living history museum in Plymouth, Massachusetts that recreates the original English colony of the 17th century. A typical lobster boat docked along Cape Cod in Massachusetts.
Built between and , Trinity Church in Boston Massachusetts is the archetype of the Richardsonian Romanesque style named after the architect , which is characterized by rough stone, heavy round-headed arches often springing from clusters of short squat columns , clay roof tiles, and a massive tower. The facade of Trinity Church in Boston Massachusetts vividly displays many details of the Richardsonian Romanesque style.
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The church's reflection within the office building's windows creates an interesting juxtaposition of architectural styles. The sanctuary of Trinity Church in Boston, Massachusetts. The altar of Trinity Church, Boston, Massachusetts. A view of the interior of Trinity Church, Boston, Massachusetts, showing some of the architectural details, stained glass windows, and the church organ. Launched in , it was one of the first six original frigates built for the US Navy. Close up view of the bow of the USS Constitution. The ship is constructed of white and longleaf pine, white oak, and, most importantly, southern live oak.
The latter is particularly dense, heavy, and difficult to work, but very strong. Because her hull was built 53 cm 21 in thick in an era when 47 cm 18 in was common, she was able to withstand cannonades, thus earning the nickname of "Old Ironsides. A top platform and some of the rigging on the frigate USS Constitution. Gun ports of the USS Constitution. Although rated as a gun frigate, the ship would often carry over 50 guns at a time. Constitution is 62 m ft long and The height of the central mainmast is 67 m ft. This false-color satellite image shows greater New York City.
The Island of Manhattan is jutting southward from top center, bordered by the Hudson River to the west and the East River to the east. North is straight up in this scene. In the middle of Manhattan, Central Park appears as a long green rectangle running roughly north-south with a large lake in the middle. Also visible are parts of Staten Island bottom left corner and Long Island lower right.
Visible from space, a smoke plume rises from the Manhattan area after two planes crashed into the towers of the World Trade Center. This image is one of a series taken that day of metropolitan New York City that shows the smoke plume rising from the Manhattan. Rockefeller Center in New York City. A flight trail of an Antares rocket - with Cygnus resupply spacecraft onboard - appears over the memorial. The cargo resupply mission to the International Space Station delivered about 3, kg 7, lb of scientific research equipment and crew supplies to the orbital laboratory and its crew.
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Introduction :: United States. Background : This entry usually highlights major historic events and current issues and may include a statement about one or two key future trends. Geography :: United States. Location : This entry identifies the country's regional location, neighboring countries, and adjacent bodies of water. Geographic coordinates : This entry includes rounded latitude and longitude figures for the centroid or center point of a country expressed in degrees and minutes; it is based on the locations provided in the Geographic Names Server GNS , maintained by the National Geospatial-Intelligence Agency on behalf of the US Board on Geographic Names.
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http://gatsbybuild.co.uk/cmo-escribir-correctamente-para-todos-los-pblicos.php Maritime claims : This entry includes the following claims, the definitions of which are excerpted from the United Nations Convention on the Law of the Sea UNCLOS , which alone contains the full and definitive descriptions: territorial sea - the sovereignty of a coastal state extends beyond its land territory and internal waters to an adjacent belt of sea, described as the territorial sea in the UNCLOS Part II ; this sovereignty extends to the air space over the territorial sea as well as its underlying s.
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Natural hazards : This entry lists potential natural disasters. For countries where volcanic activity is common, a volcanism subfield highlights historically active volcanoes. Environment - current issues : This entry lists the most pressing and important environmental problems. The following terms and abbreviations are used throughout the entry: Acidification - the lowering of soil and water pH due to acid precipitation and deposition usually through precipitation; this process disrupts ecosystem nutrient flows and may kill freshwater fish and plants dependent on more neutral or alkaline conditions see acid rain.
Acid rain - characterized as containing harmful levels of sulfur dioxi. Environment - international agreements : This entry separates country participation in international environmental agreements into two levels - party to and signed, but not ratified. Agreements are listed in alphabetical order by the abbreviated form of the full name. Geography - note : This entry includes miscellaneous geographic information of significance not included elsewhere.
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