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  • Mine Blast 60m From Digger - YouTube

    10.10.2008  This is a shot my husband designed and fired after the digger broke down just meters from the shot. As you can see it has been covered in thick rubber to try...

  • 作者: mum040507
  • Iron Ore Blasts - YouTube

    02.01.2013  A bunch of iron ore blasts from Christmas Creek, WA.

  • 作者: Thomas Rippon
  • BEST PRACTICES IN DRILL AND BLAST - IQPC Corporate

    Ahead of Drill and Blast 2014, Mining IQ has assembled insights into trends, frameworks and observations that refl ect industry progress towards effi cient and productive drill and blast operations. TECHNOLOGY Developments in information technology have gone through leaps and bounds, which have led to ripple effects in raising the standards of technology in drilling and blasting. In drilling ...

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  • Drilling Blasting JSW Australia

    We offer a full drilling and blasting service with the capabilities to drill holes ranging from 64mm to 311mm holes. MINING Our team has deep mining experience spanning projects large and small, across multiple commodities, including gold, iron ore, bauxite, lithium, nickel and coal.

  • Drilling and blasting - Wikipedia

    OverviewHistoryProcedureRock supportSee alsoExternal links

    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 is often known as a rock cut. Drilling and blasting currently utilizes many different varieties of explosives with different compositions and performance properties. Higher velocityexplosives are used for relatively har

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    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 is often known as a rock cut. Drilling and blasting currently utilizes many different varieties of explosives with different compositions and performance properties. Higher velocityexplosives are used for relatively hard rock in order to shatter an

    Wikipedia CC-BY-SA 许可下的文字
  • Design of controlled blasting (pre-splitting) in Golegohar ...

    Design of controlled blasting (pre-splitting) in Golegohar iron ore mine, Iran . Article (PDF Available) in Transactions of the Institution of Mining and Metallurgy, Section A: Mining Technology ...

  • Gold, Iron Ore, Hematite Mining - Action Drill Blast

    Mining Drill and Blast: We are mining specialists, our team is highly skilled in all aspects of production blasting. We are the best equipped contractor to offer large diameter drill capacity to deliver cost and productivity advantages. We have experience in all commodity ground conditions including: Iron ore; Gold; Lithium; Base metals; Magnetite; Haematite; Nickel mining. Drill Fleet: Our ...

  • H BLASTING IN SURFACE EXCAVATION - Mining and Blasting

    A new iron ore deposit is to be worked by surface mining methods with 15 m benches using 150 mm diameter blastholes. Since the prevailing condition is dry rock, it has been decided to use bulk ANFO with emulsion cartridges as primer. Assume that the overall density of compacted ANFO and the primer as 0.85 g/cm3 and the powder factor of 0.6 kg ...

  • AL Drilling and Blasting

    He also has an excellent record of drilling blasting holes for, inter alia, De Beers, Trans Hex and various mines around Kimberley including Cape Lime. He is familiar with the Kalahari Clay, Bennett Iron Stone, and Iron Ore drilling. He has also drilled incline holes (± 70 Degrees) at PPC DeHoek Piketberg. Cape Lime, Vredendal made use of his services for their blasting holes. Our ...

  • Major Mines Projects Sishen Mine

    Mining started in outcrop and shallow ore areas along the north to south strike of the ore body and is generally progressing in a westerly direction along the dip of the ore body, with the mine pit becoming increasingly deeper towards the west. Four types of hard iron ore, namely massive, laminated, conglomerated and brecciate iron ore are mined. Blast hole drilling is a continuous process and ...

  • Marandoo Iron Ore Mine, Pilbara - Mining Technology ...

    Open-pit mining at Marandoo iron ore mine. Open-pit operations involving truck and shovel techniques are used to extract the iron ore deposits from the Marandoo mine. The mining method involves drilling, digging, exploring, blasting, loading and hauling. Drilling is carried out using two Reedrill SKSS 12 Blast Hole and Cubex QXR 920 drill rigs ...

  • Environmental impact of iron ore mining - Wikipedia

    The environmental impact of iron ore mining, in all its phases of, from excavation to beneficiation to transportation, ... Common methods of extracting the iron ore consist of blasting, drilling, or general excavating,,. Most iron ore is produced from open-pit mines. After the iron ore is out of the ground, it may be shipped to the iron and steel manufacturing plant. If the ore contains less ...

  • » Drill BlastWestdrill

    Our Drill Blast team have previously held 9 consecutive years LTI Free – a remarkable effort given the sheer size and diversity of our operations. Our projects speak volumes. It’s our unfailing reputation for delivering superior drilling and blasting services, that has lead us to work on significant mining and infrastructure projects in WA. These include: Inaugural contractor for the ...

  • Corunna Downs Iron Project, Pilbara - Mining

    Mining and processing at Atlas Iron’s mine. Corunna Downs will be a conventional open-pit operation using drill and blast, and truck and excavator load and haul methods. It will include four open-pits, the mining of which will be outsourced to a mining contractor who will operate under the supervision of Atlas Iron.

  • Underground mining (hard rock) - Wikipedia

    Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, usually those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also involves using the same techniques for excavating ores of gems such as s or rubies. Soft rock mining refers to excavation of softer minerals such as salt, coal ...

  • Kiruna Iron Ore Mine - Mining Technology Mining

    With an ore body 4km long, 80m thick and reaching a depth of 2km, LKAB’s Kiruna is the world’s largest, most modern underground iron ore mine. Since mining began at the site over 100 years ago, Luossavaara-Kiirunavaara AB (LKAB) has produced over 950Mt of ore, yet only one-third of the original ore body has been extracted.

  • Underground mining (hard rock) - Wikipedia

    Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, usually those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also involves using the same techniques for excavating ores of gems such as s or rubies. Soft rock mining refers to excavation of softer minerals such as salt, coal ...

  • Kiruna Iron Ore Mine - Mining Technology Mining

    With an ore body 4km long, 80m thick and reaching a depth of 2km, LKAB’s Kiruna is the world’s largest, most modern underground iron ore mine. Since mining began at the site over 100 years ago, Luossavaara-Kiirunavaara AB (LKAB) has produced over 950Mt of ore, yet only one-third of the original ore body has been extracted.

  • Blasting - Safety Training Videos - Mine Safety and Health ...

    The World's Largest Recorded Mining Blast Carried out by the Iron Ore Company of Canada (a subsidiary of Rio Tinto) at its Humphrey South Pit, in Canada, Labrador West. 2100 tonnes of explosive were used in the blast. 1400 holes were drilled. It took ten weeks to load the bench. The bench measured 1.2km long, 15.5m high and was 90m wide. To give a scale of this blast size, it was half

  • Open pitdrillingandblastingt - SAIMM

    Open pitdrillingandblastingt SYNOPSIS ByALANBAUER,*B.Sc., Ph.D.(Visitor) Adiscussion ispresented oftheadvances thathavebeenmade inrotarydrilling recentyearsanditisindicated howandwhythese drills havereplaced percussive equipment eveninthehardest formations atlargerthan7in. diameter. Amethod ispresented showing howitispossible toestimate drill requirements andhowtooptimize drilling andblasting ...

  • Selection of Powder Factor in Large-Diameter Blast Holes

    In metal mines where ore is reduced to a small size for concentration, excessive fines from blasting are not generally considered a problem. In these operations, powder factor selection should recognize downstream costs in both the mine and mill. Improved fragmentation accomplished in blasting not only reduces the workload in crushing and grinding but also improves loading rates and reduces ...

  • Drill and Blast Performance Evaluation at the Obra Pit of ...

    drilling and blasting using Mine Management Reporting Software. From the analyses, it was observed that the blast designed parameters and blasting practices were acceptable to produce good fragmentation but the actual drilling parameters deviated from the designed parameters by about 25%, 24% and 26% in hole depth, burden and spacing respectively. It was concluded that the cause of the ...

  • Ten technologies with the power to transform mining

    Rio Tinto, the world’s second biggest iron ore producer, began using the Komatsu AHS, the world’s first commercial autonomous mining haulage system, for its Pilbara iron ore operation in Australia in December 2008. The miner was operating 19 autonomous 930E Komatsu haul trucks by mid 2013. It also announced in 2011 that it would buy 150 such trucks for its Pilbara operation by 2016. Rio ...

  • Simandou Iron Ore Project - Mining Technology

    The two deposits together hold more than 2.4 billion tonnes of high grade iron ore. Mining and processing at Guinea’s iron mine. The deposit will be mined using open pit mining that will use conventional drilling, blasting, loading and haul methods.

  • Mining - LKAB

    Ore is extracted from LKAB's surface mines by means of bench mining. The method is based on mining the ore in descending levels through drilling and blasting. The thickness of the slabs, known as the bench height, is 15 metres, and the slabs are worked downwards. Bench mining is an effective and well established mining method, which allows ...

  • Water powered drilling is proving its worth in an iron

    Water powered drilling is proving its worth in an iron ore mine in Sweden. Uncategorised . The mining industry is continually looking for new drilling solutions that enable them to mine deeper ...

  • Water powered drilling is proving its worth in an iron

    Water powered drilling is proving its worth in an iron ore mine in Sweden. Uncategorised . The mining industry is continually looking for new drilling solutions that enable them to mine deeper ...

  • ASK MINING: Blasting Practices at Open Cast Mines

    For Iron ore mines:-1. Bench Height and Hole Diameter: If the bench height is 10-12m, then blast hole diameter should be 150mm, if the bench height <6m then blast hole diameter should be 100mm. In rare cases, 250mm blast holes are selected. 2. Spacing and Burden: In case of 150-165mm blast holes spacing and burden varies from 3-7m whereas height of the bench varies from 8-12m. 3. Stemming ...

  • An approach to improve blasting efficiency in an iron

    ABSTRACT This paper presents an approach to improve overall blasting efficiency in an iron ore mine. The problems existing in the mines were oversize fragmentation, severe backbreak, frequent secondary drilling and blasting operations, sloping bench faces and irregular bench profiles. Thorough analysis of the blasting practices and results was done in the search of key parameters affecting ...

  • PRACTICAL BLAST IMPROVEMENT SERVICES Blast Optimisation ...

    PRACTICAL BLAST IMPROVEMENT SERVICES Drilling and explosive costs are a large proportion of a mine operating costs. Blast performance has a direct effect on earthmoving, processing costs, wall stability, re-handle, ore loss, dilution, recovered ore grade, mining equipment capital costs, and overall mine production rates for ore and waste. Because

  • Rock Mass Quality Determination in Blasting at Jalal-Abad ...

    Keywords: Blasting; rock mass quality; Specific charge; Jalal-Abad iron ore mine 1. Introduction The main purpose of drilling and blasting is to break and prepare the fragmented rocks for transportation and crushing purposes. The degree of rock fragmentation plays an important role in order to control and minimise the total production cost [1, 4]. The fragments produced by blasting should be ...

  • Controlling fragmentation - Orica Mining Services

    of broken ore on explosives at the drill and blast stage. Yet, the blasting process is a much more energy efficient method of fragmenting rock. The need for energy efficient processing is becoming increasingly important as we continue to mine lower grade deposits and need to process (fragment) increasing amounts of rock to liberate the same amount of metal. The world recognises the link ...

  • Reduce ore dilution and loss in open pit mines BMT

    Centerra Gold’s Mount Milligan open cast copper mine recovered over US$600,000 of ore in one blast. Anaconda Mining’s Pine Cove gold mine reduced dilution from 20% to less than 5% and generated a 15% increase in recovered tonnes, valued at US$15-30k per blast.

  • Mapping out productive drill and blast ... - Australian

    Australian Mining explores the diverse ways that Maptek BlastLogic software is improving the efficiency of drill and blast activities at mine operations around the world.

  • FORGING THE FUTURE OF DRILLING IN THE MINING

    It has continuously sought out drilling productivity improvements by investing in the latest technology drills and was the first drill and blast contractor to own and operate 120,000lb pull down rotary drills for hematite and magnetite iron ore mining. More recently the company has developed specialist small footprint, high capacity RC drills to meet clients’ specific project requirements ...

  • Understanding Iron Ores and Mining of Iron Ore –

    Understanding Iron Ores and Mining of Iron Ore. Iron (Fe) is an abundant and a widely distributed element in the in the crust of the earth, constituting on an average ranging from 2 % to 3 % in sedimentary rocks to 8.5 % in basalt and gabbro. Its supply is essentially limitless in almost all regions of the world. However, most of this iron is not in a form which can be used in current iron ...

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    The materials of processing: *

    • Granite
    • Limestone
    • Basalt
    • Pebble
    • Gravel
    • Gypsum
    • Marble
    • Barite
    • Quartz
    • Dolomite
    • Gold Ore
    • Copper ore
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