Photographic book

Exploitation of mineral resources in the United States


Us mining
Us mining

As a country of continental proportions, the United States has within its borders substantial mineral deposits. America leads the world in the production of phosphate, an important ingredient in fertilizers, and ranks second in gold, silver, copper, lead, natural gas, and coal. Petroleum production is third in the world, after Russia and Saudi Arabia.

Mining contributes less than 2 percent of annual GDP and employs less than 0.5 percent of all U.S. workers. Although mining accounts for only a small share of the nation’s economic output, it was historically essential to U.S. industrial development and remains important today. Coal and iron ore are the basis for the steel industry, which fabricates components for manufactured items such as automobiles, appliances, machinery, and other basic products. Petroleum is refined into gasoline, heating oil, and the petrochemicals used to make plastics, paint, pharmaceuticals, and synthetic fibers.

The nation’s three chief mineral products are fuels. In order of value, they are natural gas, petroleum, and coal. In 2003 the United States produced 20 percent of the world’s natural gas, 20 percent of its coal, and 11 percent of its crude oil. In the last two decades, as the inflation-adjusted prices for these products declined, the extraction of these fossil fuels declined, increasing U.S. dependence on foreign sources of oil and natural gas.

The United States contains huge fields of natural gas and oil. These fields are scattered across the country, with concentrations in the midcontinent fields of Texas and Oklahoma, the Gulf Coast region of Texas and Louisiana, and the North Slope of Alaska.

Texas and Louisiana account for almost 60 percent of the country’s natural gas production. Today, oil and natural gas are pumped to the surface, then sent by pipeline to refineries located in all parts of the nation. Offshore deposits account for 13 percent of total production. Coal production, important for industry and for the generation of electric power, comes primarily from Wyoming (36 percent of U.S. production in 2005), West Virginia (14 percent), and Kentucky (11 percent). Important metals mined in the United States include gold, copper, iron ore, zinc, magnesium, lead, and silver. Iron ore is found mainly in Minnesota, and to a lesser degree in northern Michigan.

The ore consists of low-grade taconite; U.S. deposits of high-grade ores, such as hematite, magnetite, and limonite, have been consumed. Leading industrial minerals include materials used in construction—mainly clays, lime, salt, phosphate rock, boron, and potassium salts. The United States also produces large percentages of the world’s output for a number of important minerals. In 2005 the United States produced 34 percent of the world’s molybdenum, 26 percent of its phosphate rock, 15 percent of its sulfur, 13 percent of its lead, and 8 percent of its copper. Major deposits of many of these minerals are found in the western states. "USA" © Emmanuel BUCHOT, Encarta, Wikipedia

Photos of European countries to visit

Photos Czech Republic

Czech Republic

Photos Informations

Hungary Pictures

Hungary Pictures

Photos Informations

Spain photos

Spain photos

Photos Informations

Scotland Photos

Scotland Photos

Photos Informations

Photos of Portugal

Portugal

Photos Informations

Photos England

Photos England

Photos Informations

Pictures Amsterdam

Netherlands

Photos Informations

Photos of Asian countries to visit

India photos

India photos

Photos Informations

Photos of Hong Kong

Hong Kong

Photos Informations

Images from South Korea

South Korea

Photos Informations

Cambodia photos

Cambodia

Photos Informations

Photos of Japon

Photos of Japon

Photos Informations

Photos of Thailand

Photos of Thailand

Photos Informations

Photos of Taiwan

Photos of Taiwan

Photos Informations

Photos of America

Website information