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Mining Review

机译：采矿评论

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摘要

Minerals contribute to the U.S. gross domestic product (GDP) at several levels-mining, processing and manufacturing finished products. In 2008, the estimated growth rate for the real GDP of the United States was 1.1 percent and the nominal GDP was about 14.3 trillion dollars (Table 1). Trends in various sectors of the domestic economy are often reflected in mineral production and consumption rates. For instance, continued declines in the U.S. housing market during 2008 were reflected in further reductions in the production and consumption of cement, clays, construction sand and gravel and crushed stone (mineral commodities that are used almost exclusively in construction), and those associated with the related manufacture of goods, such as ceramic tile, heating and air conditioning equipment, paint, plumbing and sani-taryware, roofing, wiring and wallboard - all used by the housing industry. The widespread effects of the slowing domestic economy became more apparent in the last three to six months of 2008 when prices for many mineral commodities declined sharply after reaching record highs earlier in the year, indicating significantly lower demand for those materials or products containing them.
机译：矿物质对美国国内生产总值（GDP）的贡献来自多个层面，包括采矿，加工和制造成品。 2008年，美国实际GDP的估计增长率为1.1％，名义GDP约为14.3万亿美元（表1）。国内经济各个部门的趋势通常反映在矿产和消费率上。例如，2008年美国住房市场的持续下滑反映在水泥，粘土，建筑用砂，砾石和碎石（几乎全部用于建筑的矿物产品）以及与相关商品的制造，例如瓷砖，供暖和空调设备，油漆，水暖和卫生用品，屋顶，布线和墙板-所有这些都由房屋行业使用。国内经济放缓的广泛影响在2008年的最后三至六个月变得更加明显，当时许多矿产商品的价格在今年初达到创纪录的高位后急剧下跌，表明对这些材料或包含它们的产品的需求大大降低。

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