A canary in a coal mine is an advanced warning of some danger. The metaphor originates from the times when miners used to carry caged canaries while at work; if there was any methane or carbon monoxide in the mine, the canary would die before the levels of …
Glossary of coal mining terminology Jump to ... A blower was a source of firedamp issuing into the mine from a fissure in the coal. The term "feeder" was used in some areas. The issue of gas was often audible, hence the name. ... The term possibly comes from Welsh language ogof, gof, "cave". H. Headframe, headstocks or headgear.
Mining, Mineralogy a black or dark-brown combustible mineral substance consisting of carbonized vegetable matter, used as a fuel. Cf. anthracite, bituminous coal, lignite. a piece of glowing, charred, or burned wood or other combustible substance.
to extract (ore, coal, etc.) from a mine. to avail oneself of or draw useful or valuable material from: to mine every reference book available in writing the term paper. to use, especially a natural resource: to mine the nation's forests.
Glossary of Mining Terms : Glossary of Mining Terms ... Prop - Coal mining term for any single post used as roof support. Props may be timber or steel; if steel--screwed, yieldable, or hydraulic. Proximate analysis - A physical, or non-chemical, test of the constitution of coal. Not precise, but very useful for determining the commercial value.
Welcome to the mining subreddit! This is a subreddit for those involved or interested in the mining industry. This includes geologists, engineers, drill riggers, students and interns, working in coal, precious and base metals, milling and concentrating and exploration.
With the closure of the last coal mines and the ageing mining population, we must now collect such data with a greater sense of urgency as it will soon be lost to us forever. This language forms a large part of the identity and camaraderie of the miners and should be preserved for …
Y-1 Appendix Y - Glossary of Mining Terms as used in this Report Abutment - In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway;
D-E. Deep Mine An underground coal mine.. Demonstrated Reserve Base A collective term for the sum of coal in both measured and indicated resource categories of reliability that represents 100 percent of coal in place as of a certain date. Includes beds of bituminous coal and anthracite 28 inches or more thick and beds of sub-bituminous coal 60 inches or more thick that occur at depths of up to ...
Mine development – The term employed to designate the operations involved in preparing a mine for coal extraction. These operations include tunneling, sinking, cross-cutting, drifting, and raising. These operations include tunneling, sinking, cross-cutting, drifting, and raising.
Used Occasionally. coal mining is one of the 30000 most commonly used words in the Collins dictionary View usage over: Since Exist Last 10 years Last 50 years Last 100 years Last 300 years Nearby words of 'coal mining'
Here is a list of some of the more commonly used mining terms and definitions when talking about underground hard rock mines. Underground mining terms most commonly used: Adit – A level, horizontal drift or passage from the surface into a mine.
Inbye – the direction in a coal mine away from the pit shaft towards the coal face. Jig – a machine used to collect concentrates of ore. Koepe winding – a system of winding, using the friction between the winding ropes and the drive pulley, used in coal mines.
Mine:an excavation made in the earth to extract minerals Mining:the activity,occupation,and industry concerned with the extraction of minerals Mining engineering: the practice of applying engineering principles to the development,planning,operation,closure,and reclamation of mines Some terms distinguish various types of mined minerals.
Definition of coal mine in the AudioEnglish.org Dictionary. Meaning of coal mine. What does coal mine mean? Proper usage and pronunciation (in phonetic transcription) of the word coal mine. Information about coal mine in the AudioEnglish.org dictionary, synonyms and antonyms.
Sep 20, 2018· canary in a coal mine (plural canaries in a coal mine or canaries in coal mines) ( idiomatic ) Something whose sensitivity to adverse conditions makes it a useful early indicator of such conditions; something which warns of the coming of greater danger or trouble by a deterioration in its health or welfare.
90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.
Wildlife in disaster movies assumes the role of the canary in a coal mine, fleeing the scene when catastrophe is imminent. Unaware that he had been given the test drug, John was used as a canary in a coal mine to see its effects on the human mind.
That's what those traveling toilets they had at some mines were nicknamed in the old days. Modem miners, no doubt, have their own slang; but the language used by miners years ago was very interesting. ... "Windy shot" is an explosion "that fails to break the coal. ... "Belly wash" was the term …
The Glossary of Mining Terminology is a living document that will continue to be improved as the industry develops and Inuktitut speakers become more accustomed to the language used by the industry. The Glossary of Mining Terminology is a first attempt to improve Inuktitut terminology in the resource development field.
Oct 21, 2018· "Canary in a coal mine" refers to an early safety measure taken by coal miners. Early coal mines did not feature ventilation systems. Modern day carbon monoxide detectors serve as the "canaries in a coal mine" for homes with natural gas appliances.
Anthracite Special : standard fare at weddings, funeral breakfasts, and other social occasions in the coal region. All food is served family style by women who are usually in a hurry. Usually ham or beef, chicken, kelbo. A really big to-do will feature both filling AND stuffing (filling is …
Glossary of Mining Terminology. A. ... Prop — Coal mining term for any single post used as roof support. Props may be timber or steel; if steel--screwed, yieldable, or hydraulic. Proximate analysis — A physical, or non-chemical, test of the constitution of coal. Not precise, but very useful for determining the commercial value.
Essentially it worked like this: Big, dirty lumps of coal came out of the mines and went in one end of the breaker. Clean, smaller size pieces of various sizes came out the other end. The breaker also filtered out slate and other rock from the coal.