Coal Mining Technology, Mining machinery, Coal By Products, CIL Performance


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INDIAN MINING & CONSTRUCTION EQUIPMENT INDUSTRY

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BACKGROUND & HISTORICAL TRENDS Construction and mining equipment cover a variety of machinery such as hydraulic excavators, wheel loaders, backhoe loaders, bull dozers, dump trucks, tippers, graders, pavers, asphalt drum / wet mix plants, breakers, vibratory compactors, cranes, fork lifts, dozers, off-highway dumpers (20T to 170T), drills, scrapers, motor graders, rope shovels etc. They perform a variety of functions like preparation of ground, excavation, haulage of material, dumping/laying in specified manner, material handling, road construction etc. These equipments are required for both construction and mining activity. With a wide production capacity base, India is perhaps the only developing country, which is totally self-reliant in such highly sophisticated equipment. India has only a few, mainly medium and large companies in the organized sector who manufacture these. The technology barriers are high, especially with respect to mining equipment and therefore the role of SM...
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Coal Industry in India – A retrospect, Nationalisation of Coal Mines

Q1.Who initiated first commercial coal mining in India ? Ans.Warren Hastings at Raniganj (W.B.) in 1774. Q2.Who opened first Coal Mines in India and when ? Ans.Jhan Summer and Hitler of East India at Raniganj Coalfields on 11/08/1774. Q3.When was first underground Coal Mining started in India ? Ans.1815 Q4.Who was the first Indian entrepreneur in Coal Mining in India? Ans.Prince Dwarkanath Tagore, relative of Rabindranath Tagore, CARR, Tagore & Co. in 1835 Q5.Which period was the first boom year of Indian Coal Industry & Why ? Ans 1907 & 1908 due to growth of JCF (Jharia Coalfields & completion of Grand Chord Line of East India Railway). Q6.When was first underground Coal Mining started in India ? Ans.1815 Q7.What was coal Production of India in 1942 & 1946? Ans.29 MT and 30 MT respectively. Q8. Write about NATIONALISATION OF INDIAN COAL MINES : Non Coking Coal Mines were nationalized in 31st Jan.1973 (effective from 01.05.1973) except captive mines...
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Questionare on CMR & CMA

Questionare on CMR & CMA   Q1. Which cut is used for solid blasting in Indian coal Mines a)  Fan cut  b) burn cut  c) wedge cut d) drag cut   Q2. Permitted explosives are safe to use because a) They have less strength b) they have low velocity of detonation c) they do not produce much noise during blasting d) special chemical are used to extinguish the spark produced during blasting.   Q3. Burden is the distance between a)      Two blast holes in same row b)      distance between two rows c)       distance between first row of blast holes and bench d)      d) none of the above   Q4. Which of the following explosive have maximum strength a)      ANFO b) TNT c) RDX d) Nitroglycerine   Q5. To measure the performance of blasting which factor is calculated a)   Tonnage factor  b) space facto...
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