coal age
1coal age — or coal age, the Carboniferous period, during which most of the coal deposits were formed: »By the latter part of the Coal Age, this continent had begun to crack up and the pieces to drift apart (White and Renner) …
2Coal Age — or coal age, the Carboniferous period, during which most of the coal deposits were formed: »By the latter part of the Coal Age, this continent had begun to crack up and the pieces to drift apart (White and Renner) …
3coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… …
4Coal mining — Men leaving a UK colliery at the close of a shift Surface coal mining in Wyo …
5coal ball — a spherical mass of mineral and plant material embedded in coal beds, ranging in size from that of a pea to that of a boulder. [1735 45] * * * ▪ paleontology a lump of petrified plant matter, frequently spheroid, found in coal seams of the… …
6Coal County, Oklahoma — Location in the state of Oklahoma …
7Coal Run Village, Kentucky —   City   Location of Coal Run Village, Kentucky …
8Coal City, West Virginia —   CDP   Coal City Club, 1974 …
9Coal Black and de Sebben Dwarfs — Merrie Melodies series Coal Black title card. Directed by …
10Coal Grove, Ohio —   Village   Location of Coal Grove, Ohio …
