- shallow seams
- • повърхностна тънка пукнатина
English-Bulgarian polytechnical dictionary . 2013.
English-Bulgarian polytechnical dictionary . 2013.
Cheadle Coalfield — Foxfield Colliery The Cheadle Coalfield is a coalfield in the United Kingdom. Centred around the town of Cheadle, Staffordshire and its outlying villages it lies to the east of Stoke on Trent and the much larger North Staffordshire Coalfield. The … Wikipedia
Manchester Coalfield — The Manchester Coalfield is part of the South East Lancashire Coalfield. Its coal seams were laid down in the Carboniferous period and some easily accessible seams were worked on a small scale from the Middle Ages and extensively from the… … Wikipedia
Piton — This article is about the rock climbing tool. There is a pair of mountains known as the Piton Mountains. In climbing, a piton (pronounced Pee ton, also called a pin or peg ) is a metal spike (usually steel) that is driven into a crack or seam in… … Wikipedia
South Yorkshire Coalfield — The South Yorkshire Coalfield is defined by a triangle lying between Barnsley, Doncaster and Sheffield, though a few mines within the coalfield lie outside this area. It is part of the larger Midland coal field which stretches from Nottingham in… … Wikipedia
sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… … Universalium
natural gas — a combustible mixture of gaseous hydrocarbons that accumulates in porous sedimentary rocks, esp. those yielding petroleum, consisting usually of over 80 percent methane together with minor amounts of ethane, propane, butane, nitrogen, and,… … Universalium
Coal — Sedimentary Rock Anthracite coal Composition Primary carbon Secondary hydrogen, sulfur … Wikipedia
Geology of Yorkshire — In Yorkshire there is a very close relationship between the major topographical areas and the geological period in which they were formed. The Pennine chain of Hills in the west is of Carboniferous origin. The central vale is Permo Triassic. The… … Wikipedia
coal 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… … Universalium
Africa — /af ri keuh/, n. 1. a continent S of Europe and between the Atlantic and Indian oceans. 551,000,000; ab. 11,700,000 sq. mi. (30,303,000 sq. km). adj. 2. African. * * * I Second largest continent on Earth. It is bounded by the Mediterranean Sea,… … Universalium
Europe — /yoor euhp, yerr / for 1; /yoo roh pee, yeuh / for 2, n. 1. a continent in the W part of the landmass lying between the Atlantic and Pacific oceans, separated from Asia by the Ural Mountains on the E and the Caucasus Mountains and the Black and… … Universalium