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Culm (botany), Culm , in Devon and Cornwall known as culm grassland
{{disambiguation, geo ...
Culm may refer to: * Culm (in British English), imperfect anthracite, a variety of coal **also some carboniferous rock strata known as the Culm Measures * Culm (in American English), coal refuse or coal waste * Culm (botany), the stem of a grass or sedge * River Culm, in Devon, England * Chełmno, Poland, formerly also known as Culm See also * Kulm (other) * Culm bank, a coalmine waste or spoil heap, a pitheap or as misnamed 'a slagheap' * Culm bomb * Purple moor grass and rush pastures Purple moor grass and rush pastures is a type of Biodiversity Action Plan habitat in the UK. It occurs on poorly drained neutral and acidic soils of the lowlands and upland fringe. It is found in the South West of England, especially in Devo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anthracite
Anthracite, also known as hard coal, and black coal, is a hard, compact variety of coal that has a submetallic luster. It has the highest carbon content, the fewest impurities, and the highest energy density of all types of coal and is the highest ranking of coals. Anthracite is the most metamorphosed type of coal (but still represents low-grade metamorphism), in which the carbon content is between 86% and 97%. The term is applied to those varieties of coal which do not give off tarry or other hydrocarbon vapours when heated below their point of ignition. Anthracite ignites with difficulty and burns with a short, blue, and smokeless flame. Anthracite is categorized into standard grade, which is used mainly in power generation, high grade (HG) and ultra high grade (UHG), the principal uses of which are in the metallurgy sector. Anthracite accounts for about 1% of global coal reserves, and is mined in only a few countries around the world. The Coal Region of northeastern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Culm Measures
The Culm Measures are a thick sequence of geological strata originating during the Carboniferous Period that occur in south-west England, principally in Devon and Cornwall, now known as the Culm Supergroup. Its estimated thickness varies between 3600 m and 4750 m though intense folding complicates it at outcrop. They are so called because of the occasional presence in the Barnstaple–Hartland area of a soft, often lenticular, sooty coal, which is known in Devon as ''culm''. The word culm may be derived from the Old English word for coal ''col'' or from the Welsh word ''cwlwm'' meaning knot (due to the folding of the beds in which the coal is found). Most of the succession consists of shales and thin sandstones, but there are also occurrences of slate, limestone and chert. Culm grassland on the formation's slates and shales is composed of purple moor grass and rush pasture. It is noted for a wide diversity of species, some extremely rare including the marsh fritillary butterfly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coal Refuse
Coal refuse (also described as coal waste, rock, slag, coal tailings, waste material, rock bank, culm, boney, or gob) is the material left over from coal mining, usually as tailings piles or spoil tips. For every tonne of hard coal generated by mining, 400 kilograms of waste material remains, which includes some lost coal that is partially economically recoverable. Coal refuse is distinct from the byproducts of burning coal, such as fly ash. Piles of coal refuse can have significant negative environmental consequences, including the leaching of iron, manganese, and aluminum residues into waterways and acid mine drainage. The runoff can create both surface and groundwater contamination. The piles also create a fire hazard, with the potential to spontaneously ignite. Because most coal refuse harbors toxic components, it is not easily reclaimed by replanting with plants like beach grasses. Gob (short for "garbage of bituminous") has about four times as much toxic mercury and more s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Culm (botany)
A culm is the aerial (above-ground) stem of a grass or sedge. It is derived from Latin 'stalk', and it originally referred to the stem of any type of plant. In horticulture or agriculture, it is especially used to describe the stalk or woody stems of bamboo, cane or grain grasses. Malting In the production of malted grains, the culms refer to the rootlets of the germinated grains. The culms are normally removed in a process known as "deculming" after kilning when producing barley malt, but form an important part of the product when making sorghum or millet Millets () are a highly varied group of small-seeded grasses, widely grown around the world as cereal crops or grains for fodder and human food. Most species generally referred to as millets belong to the tribe Paniceae, but some millets ... malt. These culms are very nutritious and are sold off as animal feed. References Plant morphology {{Botany-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Culm
The River Culm flows through the Devon Redlands in Devon, England and is the longest tributary of the River Exe. It rises in the Blackdown Hills at a spring near RAF Culmhead in Somerset, and flows west through Hemyock, then Culmstock (in the Culm Valley) to Uffculme. The river turns south, through Cullompton (and alongside the M5 motorway), skirting the northern boundary of Killerton Park to join the River Exe on the north-western outskirts of Exeter. The name of the river is thought to mean 'knot' or 'tie', in reference to the river's twists and loops. Course of the river The River Culm begins in a marshy field near Culmhead (picture 1). Four and a half miles from its source the river (OS ST17501455) it is 1.5m wide (picture 2). At Gladhayes the river passes under a two-arched bridge (picture 3). About half a mile further the river is joined by the waters of Madford River. From here the river continues to Culmstock, a village straddling both sides of the river whe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chełmno
Chełmno (; older en, Culm; formerly ) is a town in northern Poland near the Vistula river with 18,915 inhabitants as of December 2021. It is the seat of the Chełmno County in the Kuyavian-Pomeranian Voivodeship. Due to its regional importance in the Middle Ages, the city gave its name to the entire area, Chełmno Land (and later an administrative unit of the Kingdom of Poland, the Chełmno Voivodeship), the local Catholic diocese and Kulm law, which was used to found cities and towns around Poland, including the current capital city of Warsaw. Name The city's name ''Chełmno'' comes from ''chelm'', the old Polish word for hill. After the area was granted to the Teutonic Knights as a Polish fief in 1232, the Germanized name ''Kulm'' was used in official documents regarding the town, as the city was a member of the Hanseatic League and part of the State of the Teutonic Order. Chełmno was annexed by Prussia in the First Partition of Poland in 1772 and, as part of a la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kulm (other)
Kulm is a German language toponym derived from the Latin ''culmen'', meaning hill, and may refer to: Places Austria * Kulm bei Weiz, a municipality in Styria * Kulm am Zirbitz, a municipality in Styria * Kulm (ski flying venue), a ski jumping site at Tauplitz, Salzkammergut Bohemia, now Czech Republic * The German name of Chlumec (Český Krumlov District) in Bohemia, the scene of: ** Battle of Kulm, 1813 defeat to Napoleon by Austrians, Prussians, and Russians * The German name of Chlumec (Ústí nad Labem District) in Bohemia Germany * Rauher Kulm, a mountain near Kemnath, Upper Palatinate * Kulmbach, a stream and town in Bavarian district of Upper Franconia * Kulm (Saalfeld), a hill near Saalfeld Iran * Kulm-e-Bala, a village in Ilam Province * Kulm-e-Pain, a village in Ilam Province Prussia, now Poland * Culm/Kulm town in Prussia, now Chełmno **Kulm law, a Prussian Law (type of town charter) ** Kulmerland, an historic region and diocese in Prussia Switzerland * Harderkul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Culm Bank
In mining, tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction ( gangue) of an ore. Tailings are different to overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed. The extraction of minerals from ore can be done two ways: placer mining, which uses water and gravity to concentrate the valuable minerals, or hard rock mining, which pulverizes the rock containing the ore and then relies on chemical reactions to concentrate the sought-after material. In the latter, the extraction of minerals from ore requires comminution, i.e., grinding the ore into fine particles to facilitate extraction of the target element(s). Because of this comminution, tailings consist of a slurry of fine particles, ranging from the size of a grain of sand to a few micrometres. Mine tailings are usually produced from the mill in slurry form, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Culm Bomb
A culm bomb (also culm ball, depending on location in Ireland) is a compressed ball of culm mixed with yellow clay as a binding agent. For roughly 400 years, culm bombs were used in Irish industry (''e.g.'' blacksmith's forges and grain drying) and for domestic use around the major coal mining areas of Ireland (''e.g.'' Castlecomer and Ballingarry). In domestic use, culm bombs were often hand made by those who used them as coal finings could be bought (or found) more cheaply than buying coal. The yellow clay used to bind the culm could be dug up in a field, being common to the areas in which culm bombs were made. When large quantities of bombs were being made the process was somewhat mechanised by using a culm crusher drawn by a horse. Otherwise, for smaller batches used by a single family the process was entirely manual, with a person wearing a strong pair of boots trampling the culm and clay mixture, which was known as "dancing the culm" as it required a person to tread ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
