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The US coal industry has gone through a number of gradual shifts in recent decades. The industry has become more concentrated, and mine productivity has improved. More low-sulfur coal and less high sulfur coal is today being produced. Less coal is exported, in part because of a strong US dollar. Improved production methods, such as greater utilisation of and improvements in longwall mining technology, have lowered the cost of underground mining, although surface mining continues to hold a substantial cost advantage. base is estimated by the Energy Information Administration (EIA) at 508...

"She could see to the horizon to where the Brooklyn and Manhattan bridges formed necklaces. So writes Susan Margulies Kalish in The Cerebral Jukebox, her first collection of poetry. With an astute eye for the telling detail, she evokes her childhood in Manhattan s Lower East Side. Stuyvesant Town, a middle-class housing development of a hundred look-alike buildings, became her mid-city haven during the baby boom that followed World War II. Her favorite jukebox hits of the Fifties filter through free verse vignettes, recalling a time of innocence, while the songs of the Sixties echo the...

In the past, the oil and gas industry considered gas locked in tight, impermeable shale uneconomical to produce. However, advances in directional well drilling and reservoir stimulation have dramatically increased gas production from unconventional shales. The United States Geological Survey estimates that 200 trillion cubic feet of natural gas may be technically recoverable from these shales. Recent high natural gas prices have also stimulated interest in developing gas shales. Although natural gas prices fell dramatically in 2009, there is an expectation that the demand for natural gas will...