Copyright © Philip M. Parker, INSEAD. Terms of Use.
| Domain | Definition |
Mining | A. The general name for coal particles of small size. In experimental mine testing, particles that will not pass through a 20-mesh screen-- 1/32-in-square (0.8-mm-square) openings--are not considered as coal dust b. In 1964, a series of laboratory tests were made with a spark source on aluminum powder and cornstarch (both dusts presenting a more severe explosion hazard than coal dust). It was found that particles passing a U.S. Standard No. 40 sieve (particles less than 0.016 in or 0.4 mm) contributed to an explosion in the laboratory bomb. The 0.016-in particle diameter was recommended as the definition for dust in surface industry. Thus, two definitions of dust exist. For coal mines, dust consists of particles passing a U.S. Standard No. 20 sieve (particles less than 850 mu m), and for surface industries, dust consists of particles passing a No. 40 sieve (particles less than 425 mu m). The use of two definitions is not incongruous since the potential igniting sources in a coal mine can be much more severe than those in surface industries c. The dust produced by the breakage and crushing of coal underground and at coal preparation plants. It is usually intermixed with a varying proportion of stone dust. Coal dust in mines presents two main dangers: explosion hazard and pneumoconiosis hazard. The explosibility of a coal dust cloud depends upon its fineness, purity, and volatile content. The dust particles believed to be harmful from the pneumoconiosis aspect are those of 5 mu m and under. In mines, the most common explosive dust encountered is bituminous coal dust. The U.S. Bureau of Mines has established that coal dust in the absence of gas can explode and that explosions can occur in any shape of mine opening.See also:dust-free conditions. (references) |
Source: compiled by the editor from various references; see credits. | |
Crosswords: COAL DUST |
| English words defined with "COAL DUST": anthracosis, Artificial fuel ♦ black lung, black lung disease, briquet, briquette ♦ coal miner's lung, Coom. (references) |
| Specialty definitions using "COAL DUST": AIR ANALYST, AIR-TABLE OPERATOR ♦ belt cleaner, black phthisis, BLAST-FURNACE-KEEPER HELPER, briquetting, Buxton test ♦ Chenot process, coal miners'dermatitis, colliers'stripes ♦ density of dust cloud, double-entry zone test, dust consolidation, dust firing, DUST SAMPLER, dust-suppression person ♦ explosibility limit, explosion-hazard investigation, explosion-proof motor ♦ gas explosion ♦ miner's pneumoconiosis, mixed dust, mixed explosion, MSA distributor ♦ rock duster, rock-dust barrier, ROCK-DUST SPRAYER, rock-dust testing kit, rock-dusting machine ♦ second or back explosion, single-entry zone test, standard ignition test, stone dust, stone dusting, superdusting ♦ undercut atomizer ♦ washing apparatus. (references) |
| Domain | Usage | |
Movie/TV Titles | The Coal Dust Twins (1923) | |
Source: compiled by the editor from various references; see credits. | ||
| Domain | Title |
Books | |
Source: compiled by the editor from various references; see credits. | |
| Thumbnail | Description & Credit |  | "Just as happy after coaling": Crewmen clowning for the camera after coaling ship, circa 1913. Photographed by Sargent. Note coal dust on nearly everyone, and goggles worn by a few. Credit: NAVY. |
Source: pictures compiled by the editor from various references; see picture credits. | |||
| The following statistics estimate the number of searches per day across the major English-language search engines as identified by various trade publications. Hyperlinks lead to commercial use of the expression at Amazon.com. |
| Expression | Frequency per Day |
coal dust | 7 |
| Source: compiled by the editor from various references; see credits. | |
| Language | Translations for "COAL DUST"; alternative meanings/domain in parentheses. | ||||||||||||||||||||||||||||
Albanian | pluhur qymyri (culm, slack). (various references) | ||||||||||||||||||||||||||||
Czech | uhelný prach. (various references) | ||||||||||||||||||||||||||||
Danish | salt-pasta metoden bruges stedse mere ved kulminedrift for at forebygge kulstoeveksplosioner (the salt paste method is being increasingly used in coal mining for the prevention of coal dust explosions). (various references) | ||||||||||||||||||||||||||||
Dutch | zoutpasta's worden in toenemende mate gebruikt als beveiligingsmiddel tegen kolenstofexplosies in kolenmijnen (the salt paste method is being increasingly used in coal mining for the prevention of coal dust explosions). (various references) | ||||||||||||||||||||||||||||
French | poussière de charbon. (various references) | ||||||||||||||||||||||||||||
German | als Sicherung gegen Kohlenstaubexplosionen findet das Salzpastenverfahren eine staendig zunehmende Verbreitung im Steinkohlenbergbau (the salt paste method is being increasingly used in coal mining for the prevention of coal dust explosions). (various references) | ||||||||||||||||||||||||||||
Greek | ανθρακοσκόνη. (various references) | ||||||||||||||||||||||||||||
Hungarian | szénpor (breeze, cinder, Duff, slack). (various references) | ||||||||||||||||||||||||||||
Italian | il metodo delle paste saline trova sempre più larga applicazione nella lotta contro le esplosioni di polveri di carbone nelle miniere di carbone (the salt paste method is being increasingly used in coal mining for the prevention of coal dust explosions). (various references) | ||||||||||||||||||||||||||||
Japanese Kanji | 炭塵 . (various references) | ||||||||||||||||||||||||||||
Japanese Katakana | た"じ". (various references) | ||||||||||||||||||||||||||||
Manx | mynnan geayil, joan geayil. (various references) | ||||||||||||||||||||||||||||
Pig Latin | oalcay ustday мелкий уголь (coal-dust, nuts). (various references) ugljena prašina (culm). (various references) el método de la pasta salina se emplea cada vez más en la minería de carbón contra las explosiones de polvo de carbón (the salt paste method is being increasingly used in coal mining for the prevention of coal dust explosions). (various references) stybb, kolpulver (pulverized coal). (various references) | ||||||||||||||||||||||||||||
Scrabble® Enable2K-Verified Anagrams | |
| Words within the letters "a-c-d-l-o-s-t-u" | |
-1 letter: couldst, locusta, talcous. | |
-2 letters: adults, caulds, clouds, clouts, costal, cutlas, ducats, ductal, locust, octads, oscula. | |
-3 letters: acold, adult, adust, aloud, altos, ascot, autos, calos, cauld, cauls, clads, clast, clods, clots, cloud, clout, coals, coast, coats, codas, colas, colds, colts, costa, could, cults, datos, dauts, doats, dolts, dotal, duals, ducal, ducat, ducts, lauds, loads. | |
| Words containing the letters "a-c-d-l-o-s-t-u" | |
+1 letter: custodial, osculated. | |
+2 letters: outclassed, truckloads. | |
+3 letters: colatitudes, duplicators, edulcorates, elucidators, inosculated. | |
+4 letters: acidulations, discountable, duplications, elucidations, noncustodial, nucleotidase. | |
+5 letters: claudications, condylomatous, disfunctional, documentalist, dysfunctional, nucleotidases, subadolescent, zygodactylous. | |
| Source: compiled by the editor from various references; see credits. SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. | |
| 1. Crosswords 2. Usage: Modern 3. Usage: Commercial 4. Images: Photo Album | 5. Expressions: Internet 6. Translations: Modern 7. Anagrams 8. Bibliography |
Copyright © Philip M. Parker, INSEAD. Terms of Use.
