mineral coal
61Mineral charcoal — Charcoal Char coal , n. [See {Char}, v. t., to burn or to reduce to coal, and {Coal}.] 1. Impure carbon prepared from vegetable or animal substances; esp., coal made by charring wood in a kiln, retort, etc., from which air is excluded. It is used …
62Mineral wagon — A Water Orton windcutter . Ex LMS Fowler 0 6 0 4F 44458 passing Water Orton Station Junction and on to the fast lines to Kingsbury with a train of empty mineral wagons …
63coal 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… …
64Coal in Australia — Australian Energy resources and major export ports …
65Coal oil — Cannel coal, used to produce coal oil, from the Pennsylvanian of NE Ohio Coal oil is a term once used for a specific shale oil used for illuminating purposes.[citation needed] …
66Coal Measures — British coalfields in the nineteenth century. The Coal Measures is a lithostratigraphical term for the coal bearing part of the Upper Carboniferous System. It represents the remains of fluvio deltaic sediment, and consists mainly of clastic rocks …
67Coal sampling — The collection and proper storage and handling of a relatively small quantity of coal for laboratory analysis. Sampling may be done for a wide range of purposes, such as: coal resource exploration and assessment, characterization of their… …
68Coal forest — Etching depicting some of the most significant plants of the Carboniferous. Coal forests were the vast swathes of wetlands that extended over much of the tropical land areas during late Carboniferous (Pennsylvanian) and Permian times.[1 …
69mineral — 1. adj Relating to minerals or the process and business of mining; bearing or producing valuable minerals 2. noun Any valuable inert or lifeless substance formed or deposited in its present position through natural agencies alone, and which is… …
70mineral — 1. adj Relating to minerals or the process and business of mining; bearing or producing valuable minerals 2. noun Any valuable inert or lifeless substance formed or deposited in its present position through natural agencies alone, and which is… …
