soft coal


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soft coal

[′sȯft ′kōl]
(geology)
References in periodicals archive ?
For this approach, geological and rheological data (Table 1) for hard and soft coal seams determined by Lu (2009) and Lu at al.
A cold "cookie" has hard "chocolate chips" that can be pulled out with the mining equipment, without damaging the land as much as soft coal mining does.
ON COMPLETION of the Niagara Falls hydro project in 1905, a journalist enthused that "a source of energy as vast as the entire soft coal deposits of Pennsylvania had by some miraculous process been transferred to Canadian soil and by another miracle made not only clean but inexhaustible.
Dust in China, where particularly noxious soft coal is a major energy source, now kills an estimated one million Chinese a year and is stunting the growth of crops in China as well.
As to fuel, I average 800 pounds of soft coal to 1,000 bushels of wheat, or in other words 75 cents to $1.
But the United States is no more likely to adopt a one-child policy than China is likely to adopt American-style restrictions on the burning of soft coal.
But once oil and soft coal began to replace anthracite as the nation's main energy sources, decline came swiftly, setting the stage for job and population losses that lasted decades.
In the extreme southwestern corner of Poland where Poland, Germany and the Czech Republic come together, there is a soft coal fired power plant which provides approximately 10 percent of the electricity for the entire country.
He is the author of numerous books and articles about workers at the turn of the century, including Soft Coal, Hard Choices: The Economic Welfare of Bituminous Coal Miners, 1890-1930 (1992).
As the title implies, Fishback contends that labor market participants in the soft coal, or bituminous, industry at the turn of the century fared better than workers in most manufacturing settings and had conscious alternatives to employment in the mines.
The mine had a soft coal bottom and high methane levels, so they had to spray a lot of dust to prevent ignitions.
Due to Tampa Electric's need for rate relief and to soft coal markets, earnings in 2013 will be under pressure.