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key to Productive Mining: Blast design

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Blasting and Mining cost Blasting operation is one of the Technology use in breaking rock mass into smaller sizes. Since rock exist as an Anisotropic and heterogenous massive solid at the lithosphere it therefore requires the use of energetic Technique like blasting to generate sufficient shock wave for fracturing and gas Energy for casting down. Mining operation is known to be a capital intensive project whether small scale or large scale, likewise the place of safety is insuschangable. At this expenses, Blasting operation dictates the cost of other preceding operation and even the downstream operations. Blasting operation is a professional work that and a bit difficult to design for ordinary person since two major factors affect the output result which are the controllable factors such as burden and other hole geometry parameters and uncontrollable factors such as rock strength and other geological and geotechnical properties of rock. Making balance between this two facto...

Open pit mine design: Key to optimize productivity

Short ways reduce open pit mine operation cost: 1. Proper design: remember proper preparation prevent poor performance (5p's  key of good operation system). When it comes to open pit mining I always like to make mine plan and Design first as the key ways to optimize and garantee profitability. See through this: The following factors are the dictator of stripping ratio (Stripping cost), Drilling and Blasting, loading and haulage operation, then processing operation. Find the factors below and how that affects the about operation: Factor number 1: Bench height: This is the maximum vertical extension of the mine bench also define as the vertical distance from the toe to crest of a bench. This factor determine the type of loading equipment that will be strictly permit in the mine for loading because, the loading boom of the equipment must not be longer than the bench height. Small loading equipment means low production or high cost of getting enough loading equipment that will fit for ...

THE SAFE BLASTING AND THE CONTROL BLASTING PRINCIPLE

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LEARN ON BLASTING PRINCIPLE AND MECHANICS BEHIND CONTROL BLASTING INTRODUCTION From the view of Hoek brown failure graph and failure criterion equation adjustments using the Geological structural index GSI, variation is confirmed to occur in the rock strength parameters due to the effect of Blasting, this was shown in the addition of Rock disturbance factor D  to the determination of s,mb and a which are the rock factors constant. Rock is known to be DIANE (Disvontinous, Anisotropic, Heterogenous and non elastic) according to various claim by rock mechanist like N. Barton among others. Since rock has such dynamic characteristics, it becomes very difficult to understand the perfect behavior of Explosive energy and the quantity of powder require to cause the breaking and the casting of the rock mass.  Actually what the  generated during blast need to reflect is change in medium (solid to air, solid to liquid), this is the important of free face. Free face is the...

BLASTING AND EXPLOSIVE PROPER USE: A view on Oxygen balance

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INTRODUCTION Operations in mining industry is mainly effected by the mine work because more cost is involved and safety is required.  Blasthole Drilling shows the creation of holes into the rock mass for the placement of Explosive with the intention of fragmentation. According to Barry, (2016) liberation process begin from the mine. Though libration occur in two ways, the intra granular and inter granular libration, both occur during Blasting and during comminution. All Mining Engineering is concern about is extracting the ore from the earth crust safely and getting it to the beneficiary plant for processing, in a bit to achieve this we have the earth stress field been Disturbed and the safety of men been questioned as the various activities in Mining affect both the biosphere and the Abiosohere. This article discuss the process of Blasting as a key way to getting the rock insitu fragmented and the place of safety Paramount as far as profit is concerned. The article als...

FEAR KILLS ZEAL AND ABILITY

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NO MORE FEAR: EXAM IS FOR ASSESSMENT AND NOT TO BE FEARED (with testimony) BY: GIANT MINER Is there anything to fear than GOD? NO, not even the fear of exam! Fear is a great barrier to many students and not only affect them emotionally but also close the door of mind to remember things in exam. Human soul is made of three compactments,  The mind (room of knowledge) The Emotion The will (Decision divider) all connected. Fear makes student fail because they loss access to their mind which is the base of information for breaking the barrier of examination and test. If you never experienced it you won't understand, every student wants to have good grade, 98% is fully prepared but not all will finally actualize their expectation this is a fact! Fear is one of the cloud of limitation when sitting for examination, you may even be prepared but still you have that mind that the question may likely not be from what you have read all over night, imagine! Fear is a system that kill...

SUBDRILL AN IMPORTANT PARAMETER IN BLASTING

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  SUBDRILL: AN IMPORTANT PARAMETER IN BLASTING BACKGROUND OF THE ARTICLE To a non mining Engineer or Blasting Engineer, the question must have come to you most time that,  1. why subdrill in Blasting, what is the important? 2. Why most subdrill be included in of rock blast and which formation will subdrill not required? This article provides brief answers to the above knowledge gap. 1. INTRODUCTION Subdrill by definition is the additional hole length included to the Bench height to improve Blasting result and Bench safety. Most drillhole blasted in the mine especially in small scale miners and artisanal blasting Operation don't include subdrill because they tend not to know it important. As I have define earlier, there is a specified bench height design to mine an orebody, but the extended hole length beyond the bench height is known as subdrill length. Subdrill is one of the most important Blasting parameters that is use to improve not just the fragmentation rate ...

CHECK, VERIFY AND ENSURE IS SAFE: MINING OPERATION PROFIT METER IS NOT MONEY IS SAFETY

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IF SAFE AND PRODUCTIVE IS MINABLE Explosive charge can vary from rock to rock due to the different in discontinuity property, rock Strength, rock impedance, rock type, rock grains packing and other non controllable factors. Make a good pre-planning before Blasting and also use test Blasting to build a standard blast design for your mine. SAFTEY and Profit must be balance. Our miners must return home to their children and wife safely. We mine the ore and keep the earth healthy for the next generation. As you resume to morning, evening and afternoon shift take note of the possible hazards in the mine due to previous operation. Check the mine face in case of overbreak, check the ramp in case of slabbing effect, check blast pile for undetonated Explosive charge, cord, check drilled hole dimension and accuracy, check the operation Condition of your equipment. Check records from last shift person, try and look into any recommendations and complain in the Reports to put them in or...