• Open-pit mining Wikipedia

    OverviewExtractionWastePollutantsUntoppingRehabilitationTypical open cut gradesSee also

    Open-pit, open-cast or open cut mining is a surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or borrow. This form of mining differs from extractive methods that require tunnelling into the earth, such as long wall mining. Open-pit mines are used when deposits of commercially useful ore or rocks are found near the surface. It is applied to ore or rocks found at the surface because the overburden

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  • Blasting Techniques Used in Underground and Opencast Mines

    ADVERTISEMENTS: Read this article to learn about the blasting techniques adopted in underground and opencast mines. Blasting Techniques Adopted in Underground Mines: Drilling Patterns in Stone: Drilling patterns, also called shot-hole patterns, are named after the type of cut holes used and the principal patterns are: ADVERTISEMENTS: (1) Pyramid cut or

  • Types of Drilling Methods used in Mining Boring Mining

    ADVERTISEMENTS: In this article we will discuss about the types of drilling methods used in mining. The types are: 1. Percussive Drilling 2. Rotary Drilling. Method # 1. Percussive Drilling: In this method which is the oldest one of drilling, the hole is drilled by striking a number at short in intervals on the rock

  • Blast Hole Drilling: The Basic Process RPM Drilling

    Blast hole drilling is traditionally used wherever the mining company wants to explore the mineral composition or potential mineral yield of the area demarcated for their mining interests. Blast holes are thus a fundamental step in the exploratory mining process, and can be employed in both surface mining operations and underground mining

  • Surface Mining Methods and Equipment

    UNESCO EOLSS SAMPLE CHAPTERS CIVIL ENGINEERING Vol. II Surface Mining Methods and Equipment J. Yamatomi and S. Okubo ©Encyclopedia of Life Support Systems (EOLSS) Figure 2. Change in production and productivity of US coal mines The higher productivity for open pit mining equipment also lowers costs.

  • DRILLING AND BLASTING Mining Technology

    Aug 20, 2018· DRILLING AND BLASTING. Course Objectives: To familiarize the students with exploratory and production drilling including the factors affecting drilling; Various types of the explosives and blasting techniques used in underground and opencast mining are also explained besides blasting in civil constructions projects.

  • Optimized design of drilling and blasting operations in

    Drilling and blasting are the two most significant operations in open pit mines that play a crucial role in downstream stages. While previous research has focused on optimizing these operations as two separate parts or merely in a specific parameter, this paper proposes a system dynamic model (SDM) for drilling and blasting operations as an interactive system.

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  • Drilling process in opencast mine YouTube

    Oct 06, 2015· drilling process is first phase of blasting drilling in lignite open cast mines panandhro.katchch bhuj..

  • Author: Aashish D Patel
  • Optimization of drilling and blasting operations in an

    This research was carried out to find a possible way of optimizing the drilling and blasting operations in an open pit mine of Somair (Société des Mines de l’Air), in the Niger Republic. blasting play vital roles in opencast mining [4] . drilling and blasting operations in a particular open pit mine one can use statistical methods

  • Cited by: 12
  • Optimization of drilling and blasting operations in an

    This research was carried out to find a possible way of optimizing the drilling and blasting operations in an open pit mine of Somair (Société des Mines de l’Air), in the Niger Republic. blasting play vital roles in opencast mining [4] . drilling and blasting operations in a particular open pit mine one can use statistical methods

  • Explosives and Blasting in Opencast Mines Mining and

    May 28, 2009· This entry was posted in blasting, explosives, mining and tagged blasting, blasting in mines, explosives, mines, mines blasting. Bookmark the permalink . Post navigation

  • Welcome To High Point Opencast Mining Services

    Welcome To High Point Opencast Mining Services. Highpoint Opencast Mining Services is a mining concern specialising in drilling and blasting. The company was established in 2004 in Middleburg, Mpumalanga, where our head office is now situated.

  • Optimization of Blasting Parameters in opencast Mines

    CHAPTER 3: DRILLING AND BLASTING IN LARGE OPENCAST MINES 3.1 Drilling. 3.2 Blasting 3.3 Recent Advancement in Drilling and Blasting Techniques 9-22 23-29 30-40 CHAPTER 4: REVIEW OF OPTIMIZATION TECHNIQUES 4.1 General 4.2 Optimization of Mine Production System through Operation Research Techniques 41-45 45-48

  • Open Pit Mining Techniques,Surface Mines,Rock or Mineral

    Open-pit mining, also known as opencast mining, open-cut mining, and strip mining, means a process of digging out rock or minerals from the earth by their elimination from an open pit or borrow. The word is used to distinguish this type of mining from extractive methods that need tunneling into the earth. Open-pit mines are used when deposits

  • Underground v.s. Surface Coal Mines: Is Deep Drilling

    Is deep drilling worth the cost? While underground mining requires an array of resources, equipment and financial backing, the method is best suited if the environment and coal potential harmonize. Longwall mining accounts for 50 percent of coal mines in the world and is much safer than other methods of coal mining.

  • The basic patterns of drill holes employed in opencast

    • The basic patterns of drill holes employed in opencast mines are • Square Pattern • Staggered (or) Triangular pattern • Single row blasting pattern • Multi blasting pattern • Wedge cut pattern • Diagonal blasting pattern • Square Pattern: •

  • What Are the Environmental Impacts From Mining & Drilling

    As global energy demands continue to rise, the finite reserves of fossil fuels like oil, coal, and natural gas become harder and harder to extract. Drilling and mining techniques are becoming more invasive across the globe, and the environmental impacts from fossil fuel pollution are rapidly increasing in regions that have the highest

  • Opencast coalminingatKrielColliery SAIMM

    Planning ofthe Opencast Mine Percentage Extraction When the opencast operations were included inthe planning, the mining area changed its boundaries, but the aerial extent remained almost constant and amounted nowto8901,5ha.Thereserves areshown in Table I,which givesonlyanindication, sincetheareas >:electedforunderground mining and forthe combined

  • (PDF) ROCK BLASTING FOR MINING ResearchGate

    ROCK BLASTING FOR MINING. ring drilling and blasting methods.. Abstract- The blasting operation plays an important task in the overall economics of opencast mines. The degree of

  • Autonomous drilling delivers benefits across the mining

    Autonomous drilling delivers benefits across the mining operation. Accurate drilling and blasting helps make every other aspect of a mining operation smoother, safer and more productive. Even minor deviations from the pattern can have a big impact, with unevenly blasted material that is harder and more costly to handle, resulting in higher cost

  • Drilling and blasting practices in Nevada's openpit mines

    Drilling and blasting practices in Nevada's openpit mines. Drilling and blasting practices have been developed that are intended to optimize

  • Opencast Mining (Pty) Ltd Home Welcome to Zizwe

    Mar 24, 2020· WELCOME TO ZIZWEZIZWE is a mining services company in Southern Africa The Management team at Zizwe prides itself with more than 150 years experience in Bulk Earthworks, Bulk Materials Handling, Drilling and Blasting, Opencast Mining, Crushing and Screening and Rehabilitation. Zizwe was established in 2003 to form a local BBBEE Company

  • BP pledges not to use open-pit mining at Canadian oil

    Apr 15, 2010· BP pledges not to use open-pit mining at Canadian oil sands sites A spokesman said that the company's experience in reservoir management and drilling techniques were more relevant to this

  • New trends in drilling and blasting technology

    (2000). New trends in drilling and blasting technology. International Journal of Surface Mining, Reclamation and Environment: Vol. 14, No. 4, pp. 305-315.

  • Viewpoint Mining Magazine Autonomous drilling delivers

    Autonomous drilling delivers benefits across the mining operation. Accurate drilling and blasting helps make every other aspect of a mining operation smoother, safer and more productive. Even minor deviations from the pattern can have a big impact, with unevenly blasted material that is harder and more costly to handle, resulting in higher cost

  • Optmization of blasting parameters in open cast mines

    Aug 20, 2016· 4 Chapter-3 Drilling and blasting in large opencast mines 3.1 Drilling There are two forms of rock breakage viz., rock penetration and rock fragmentation. The former includes drilling, cutting, boring etc., while the latter includes blasting etc. The term rock penetration is preferred for all methods of forming a directional hole in the rock.

  • Surface Mining Methods and Equipment

    UNESCO EOLSS SAMPLE CHAPTERS CIVIL ENGINEERING Vol. II Surface Mining Methods and Equipment J. Yamatomi and S. Okubo ©Encyclopedia of Life Support Systems (EOLSS) Figure 2. Change in production and productivity of US coal mines The higher productivity for open pit mining equipment also lowers costs.

  • Techniques of Controlled Blasting SlideShare

    Dec 17, 2009· Following are the techniques of controlled blasting: Line drilling, Trim (Cushion) blasting, Smooth (contour or perimeter) blasting, Pre-splitting, Selecting and employing various parameters of blast design, using modern technology, Precise and accurate timing delays, Muffle blasting at critical and congested areas. 4 5.

  • Mining Engineer First Class Mine Manager Google

    About Copper mining and mining photo from copper mines in India by N G Nair Manager (Mines) Malanjkhand Copper Project. Hindustan Copper Limited, Mining Engineer. First Class Mine Manager. Metalliferous Mines. Gold mine, Lead and Zinc mine,Graphite, Feldspar. Mechanized Under Ground Mines, Mechanized Open Pit Mines. Mining Technology, Mining Software

  • Optimization of Blasting Parameters in opencast Mines

    CHAPTER 3: DRILLING AND BLASTING IN LARGE OPENCAST MINES 3.1 Drilling. 3.2 Blasting 3.3 Recent Advancement in Drilling and Blasting Techniques 9-22 23-29 30-40 CHAPTER 4: REVIEW OF OPTIMIZATION TECHNIQUES 4.1 General 4.2 Optimization of Mine Production System through Operation Research Techniques 41-45 45-48

  • Underground v.s. Surface Coal Mines: Is Deep Drilling

    Is deep drilling worth the cost? While underground mining requires an array of resources, equipment and financial backing, the method is best suited if the environment and coal potential harmonize. Longwall mining accounts for 50 percent of coal mines in the world and is much safer than other methods of coal mining.

  • Blaster's Training Modules Module 4 Blasthole Drilling

    Drilling Methods The components of a drill rig are (1) the rig itself, which supplies the power to mobilize, drill rock, and remove the drill cuttings from the hole; (2) the mounting; (3) the drill steels or drill string; and (4) the drill bit. There are two basic drilling methods—percussion and rotary—classified in

  • blast pattern Mining and Blasting

    Oct 12, 2012· Benefits of Inclined Drilling in Surface Mining: In Bench Blasting, inclined drilling extends numerous benefits. These are: Better Fragmentation Better displacement and swelling of muckpile, as Burden B is kept almost uniform along length of blasthole and angle of projection of the blast increases (Refer fig below).

  • Optimization of drilling and blasting operations in an

    Drilling and blasting play vital roles in opencast mining. These operations not only affect the cost of production directly but as well and significantly, the overall operational costs.

  • Opencast Mining Welcome to Zizwe

    Zizwe Opencast Mining provides mining clients across Southern Africa with professional services in the fields of opencast contract mining. Our turnkey mining services includes the establishment of fit-for-purpose mining solutions from open pit mine design, planning, drilling and blasting, contract mining, rehabilitation, mine closure and operational management of mining activities

  • Opencast Mining (Pty) Ltd Home Welcome to Zizwe

    Mar 24, 2020· WELCOME TO ZIZWEZIZWE is a mining services company in Southern Africa The Management team at Zizwe prides itself with more than 150 years experience in Bulk Earthworks, Bulk Materials Handling, Drilling and Blasting, Opencast Mining, Crushing and Screening and Rehabilitation. Zizwe was established in 2003 to form a local BBBEE Company in the Eastern Bushveld

  • The basic patterns of drill holes employed in opencast

    • The basic patterns of drill holes employed in opencast mines are • Square Pattern • Staggered (or) Triangular pattern • Single row blasting pattern • Multi blasting pattern • Wedge cut pattern • Diagonal blasting pattern • Square Pattern: • This pattern can also be called as multi row pattern.