High Quality Content by WIKIPEDIA articles! Anthracite (or "hard" coal), clean and smokeless, became the preferred fuel in cities, replacing wood by about 1850. Anthracite from the Northeastern Pennsylvania Coal Region and later from West Virginia was typically used for household uses because it is a high quality coal with few impurities and stoves and furnaces were designed for it. The rich Pennsylvania anthracite fields were close to the big eastern cities, and a few major railroads such as the Reading Railroad controlled the anthracite fields. By 1840, hard coal output had passed the million-short ton mark, and then quadrupled by 1850. Данное издание представляет собой компиляцию сведений, находящихся в свободном доступе в среде Интернет в целом, и в информационном сетевом ресурсе "Википедия" в частности. Собранная по частотным запросам указанной тематики, данная компиляция построена по принципу подбора близких информационных ссылок, не имеет самостоятельного сюжета, не содержит...

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