Blasting In Indian Mines

  • Citizen's Guide to Coal Mine Blasting in Indiana

    Citizen's Guide to Coal Mine Blasting in Indiana

    Why do mines have to blast? After the topsoil and subsoil layers are removed, blasting may be necessary to loosen the rock above the coal seam Mine operators drill holes in which to load explosives to fracture the rock layers The blasting agent commonly used in coal mines is called ANFO, which is a mixture of Ammonium Nitrate (a common

  • Mines blasting india - YouTube

    Mines blasting india - YouTube

    Jun 03, 2019 · Mines blasting India Mines blasting India Skip navigation Sign in Search Loading Close This video is unavailable Watch Queue Queue Watch Queue Queue Remove all; Disconnect;

  • ASK MINING: Blasting Practices at Open Cast Mines

    ASK MINING: Blasting Practices at Open Cast Mines

    Mar 02, 2012 · Blasting Practices at Open Cast Mines One can easily say that the most important part in extraction from an open cast mine is blasting and by following some simple standard practices, a high degree of productivity can be attained

  • Blasting in Mines - Mining Consultant India - Google Sites

    Blasting in Mines - Mining Consultant India - Google Sites

    A controlled blasting programme (presplitting) was adopted in an open-pit copper mine in order to improve the stability of the resulting cut slopes The aim was to reduce over break and minimize damage to the final pit walls from production blasts

  • History of Explosives and Blasting - Mining Engineer First

    History of Explosives and Blasting - Mining Engineer First

    Mining Consultant India History of Explosives and Blasting In the US and Canada alone, blasters use more than 6 billion pounds of explosives and 75 million detonators per year Coal mining accounts for two-thirds of consumed explosives of which more than 80% of it is ANFO

  • ASK MINING: Blasting Practices at Open Cast Mines

    ASK MINING: Blasting Practices at Open Cast Mines

    Mar 02, 2012 · Blasting Practices at Open Cast Mines One can easily say that the most important part in extraction from an open cast mine is blasting and by following some simple standard practices, a high degree of productivity can be attained

  • Blasting in limestone mine, India - YouTube

    Blasting in limestone mine, India - YouTube

    Jul 12, 2013 · Blasting sequence at Goldcorp's Penasquito mine in Zacatecas, Mexico - Duration: 2:30 MineSight 261,293 views

  • Explosives and blasting in underground coal mining

    Explosives and blasting in underground coal mining

    Mar 16, 2015 · BLASTING ON A PRE-CUT FACE In many mines coal-cutting machines are used to provide an additional free face for blastingWhile this may be under , over, middle or side cut, the most common practise in Indian mines is to have undercut face

  • Indian Patents 263217:

    Indian Patents 263217:"A METHOD FOR SOLID BLASTING IN

    A method for solid blasting in underground coal mines, which comprises drilling a plurality of shot holes in a development face in an underground coal mine and charging each of the said shot holes with air-decked explosive cartridges(l), characterized in that the said explosive cartridges being air-decked using spacers(2) between the said explosive cartridges(l) and also at the top and bottom of the said …

  • Prediction of blast-induced flyrock in Indian limestone

    Prediction of blast-induced flyrock in Indian limestone

    Number of accidents as well as number of deaths and injuries due to blasting in Indian mines has been shown in Fig 1, Fig 2 (Directorate general of mines safety (DGMS), 2013, Directorate general of mines safety (DGMS), 2014) Flyrock is one of the intriguing problems in opencast mining Download full …

  • Final Report Role of blast design parameters on ground

    Final Report Role of blast design parameters on ground

    Ground vibration induced by blasting is a serious environmental issue in Indian mines With the increasing production targets from surface mining, it is likely to be compounded in future unless pro-active measures are taken to mitigate the problem In response to the need of the

  • Blaster's Training Modules - Module 1 - Explosives

    Blaster's Training Modules - Module 1 - Explosives

    metal and coal mines Many of these tests do not necessarily scale to surface-blasting situations In surface mines, blasting may produce a variety of fumes that include NO x (which is orange in color) and CO (which is colorless) If gases are of concern at any surface-blasting operation, samples may be taken and tested by trained specialists

  • Optimization of Blasting Parameters in opencast Mines

    Optimization of Blasting Parameters in opencast Mines

    Drilling and blasting are the major unit operations in opencast mining Inspite of the best efforts to introduce mechanization in the opencast mines, blasting continue to dominate the production Therefore to cut down the cost of production optimal fragmentation from properly designed blasting pattern has …

  • Prepared for: MeMO 2016 - Reducing Mining Costs and Value

    Prepared for: MeMO 2016 - Reducing Mining Costs and Value

    Direct Mining (ITH, Blasting, mucking) is variable and difficult to reduce costs on supplies and parts Mining is material handling and rock breakage exercise only…streamline processes to reduce ore and waste handling Labour cost is difficult to change Service contracts should be reviewed, there is often opportunity there

  • Blasting Safety – Revisiting Site Security

    Blasting Safety – Revisiting Site Security

    In many underground mines, blasting is scheduled during a non-production shift when no one, except the blast crew, is present underground In addition to mitigating blasting hazards, this procedure aids in providing additional time for clearing dust, smoke, and fumes from the underground workings

  • CDC - Mining Topic - Blasting and Explosives - NIOSH

    CDC - Mining Topic - Blasting and Explosives - NIOSH

    Apr 04, 2017 · Mine workers may become ill or die if they remain in an area where toxic fumes levels are high Between 1994 and 2005, eight miners were injured by exposure to blasting fumes Surface blasting breaks up rock and frequently throws rock away from the blast site Mine workers may be killed or injured by rock thrown by a blast

  • ASK MINING: Blasting Practices at Open Cast Mines

    ASK MINING: Blasting Practices at Open Cast Mines

    Mar 02, 2012 · Explosives: In Indian coal mines nitroglycerine based explosives, slurries, Ammonium Nitrate and Fuel Oil Mixture(ANFO) and Liquid oxygen type Explosive(LOX) are the main explosives which are used Slurries are mostly used in Open Cast mines because of it is

  • Indian Patents 263217:

    Indian Patents 263217:"A METHOD FOR SOLID BLASTING IN

    A method for solid blasting in underground coal mines, which comprises drilling a plurality of shot holes in a development face in an underground coal mine and charging each of the said shot holes with air-decked explosive cartridges(l), characterized in that the said explosive cartridges being air-decked using spacers(2) between the said explosive cartridges(l) and also at the top and bottom of the said …

  • Optmization of blasting parameters in open cast mines

    Optmization of blasting parameters in open cast mines

    Aug 20, 2016 · Optmization of blasting parameters in open cast mines 1 OPTMIZATION OF BLASTING PARAMETERS IN OPEN CAST MINES A Project Report Submitted in partial fulfilment of requirements for award of dual degree of Bachelor of Technology and Master of Technology in Mining Engineering By Anurag Kumar Jha Exam Roll no-511214025 SESSION 2015-2016 DEPARTMENT OF MINING ENGINEEING INDIAN …

  • Prediction of blast-induced flyrock in Indian limestone

    Prediction of blast-induced flyrock in Indian limestone

    Number of accidents as well as number of deaths and injuries due to blasting in Indian mines has been shown in Fig 1, Fig 2 (Directorate general of mines safety (DGMS), 2013, Directorate general of mines safety (DGMS), 2014) Flyrock is one of the intriguing problems in opencast mining Download full …

  • Use of spacer aided initiation technique in solid blasting

    Use of spacer aided initiation technique in solid blasting

    Use of spacer aided initiation technique in solid blasting in Indian underground coal mines S K Roy* and R R Singh Solid blasting mining methods contribute about 60% of total underground coal production in India Spacer aided initiation technique utilises the inherent air gap sensitivity of the explosive to

  • Mining objective answers - SlideShare

    Mining objective answers - SlideShare

    Apr 08, 2012 · Mining objective answers 1 ANSWER SHEETQ1 Which cut is used for solid blasting in Indian coal Mines c) Wedge cutQ2 Permitted explosives are safe to use because d) Special stone are used to extinguish the spark produced during blastingQ3 Burden is the distance between c) Distance between first row of blast holes and benchQ4

  • (PDF) ROCK BLASTING FOR MINING - ResearchGate

    (PDF) ROCK BLASTING FOR MINING - ResearchGate

    Bench blasting is a common blast technique m ost often used for open pit mines By definition, bench blasting is blasting in a vertical or sub-vertical hole or a row of holes towar ds a free

  • Different Types of Explosives Used in Mining - The Balance

    Different Types of Explosives Used in Mining - The Balance

    Primary vs Secondary vs Tertiary Explosives Primary explosives can be easily detonated due to their extreme sensitivity to heat, friction, impact, static electricity Mercury fulminate, lead azide or PETN (or penthrite, or more properly Penta Erythritol Tetra Nitrate) are good examples of primary explosives used in the mining industry They can be found in blasting caps and detonators

  • Blasting using permitted P5 category explosive having

    Blasting using permitted P5 category explosive having

    Conventional blasting coal off-the-solid (B-O-S) or solid blasting in underground coal mines involves use of permitted P5 category explosive cartridges charged end-to-end and initiated using

  • Drilling and blasting - Wikipedia

    Drilling and blasting - Wikipedia

    Drilling and blasting is the controlled use of explosives and other methods such as gas pressure blasting pyrotechnics, to break rock for excavation It is practiced most often in mining, quarrying and civil engineering such as dam, tunnel or road construction The result of rock blasting …

  • List of terrorist incidents in India - Wikipedia

    List of terrorist incidents in India - Wikipedia

    Air strikes by Indian Air Force on Pakistani militant group Jaish-e-Mohammed: 103 March 7, 2019 2019 Jammu Bustand grenade blast: Jammu City, J&K: 3 28-35 Arrest made of a teen aged student of 9th standard of a local school 104 April 09, 2019 2019 Dantewada attack: Dantewada, Chhattisgarh: 5 …

  • DRILLING AND BLASTING IN HARD ROCK NARROW TABULAR …

    DRILLING AND BLASTING IN HARD ROCK NARROW TABULAR …

    PAGE 4 CHAMBER OF MINES | DRILLING AND BLASTING IN HARD ROCK NARROW TABULAR MINES INTERACTIONS AND LESSONS FROM MINES VISITS TO MINE TRAINING CENTRES Visits were conducted to two large mining companies (one gold and one platinum) to assess the quality and comprehensiveness of training in marking, drilling, charging and blasting In both cases,

  • Dangers of Toxic Fumes from Blasting - cdcgov

    Dangers of Toxic Fumes from Blasting - cdcgov

    blasting agents used in large-scale surface mine blasting do not detonate properly in boreholes of 1-inch diameter or less (ISEE, 1998) If the blasting agent is diluted by mixing with drill cuttings at the top or bottom of the borehole it may not detonate properly and excessive quantities of toxic fumes may be produced (Sapko, 2002)

  • Blast Free Mining in Indian Surface Coal Mines – Current

    Blast Free Mining in Indian Surface Coal Mines – Current

    Unpublished M Tech Dissertation submitted to Indian School of Mines, Dhanbad, pp 1–40 (1999) Google Scholar 9 Dikshit, MP, Singh, OP: Surface Miner operation – a cost effective, eco-friendly coal mining for mass production in opencast coal mines in India

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