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Coal
Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. Coal is composed primarily of carbon along with variable quantities of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen.
Settore: Energia
Aggiungi nuovo termineContributors in Carbone
Coal
pozzo di scarico
Minerario; Carbone
Qualsiasi luogo in una miniera che viene utilizzata per raccogliere l'acqua di drenaggio.
armatura in legname
Minerario; Carbone
Un termine usato per più pezzi di legno utilizzato per il supporto in una miniera.
Blossari in evidenza
Dan Sotnikov
0
Termini
18
Glossari
1
Sostenitori
The history of coffee
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