The velocity of detonation is a crucial parameter in blasting activities conducted in mines and quarries. Understanding the VoD characteristics of explosive materials and incorporating this knowledge into blast design and execution helps ensure safety, optimize fragmentation outcomes, and control environmental impacts.
The cost of drilling and blasting can vary from $3.00/m³ to $150/m³ depending on the location and relationship to buildings. For example, small diameter drills (115mm and less) can cost around $20,000/month to operate, which would add up to $1000/day if you drill and $1500/day if someone else drills.
Explosives are probably the most cost-effective method of rock excavation in underground mining operations 1,2,3.Tunnel and underground rock excavation have largely relied on drilling and blasting ...
Blasting practices in mines have undergone many changes in the recent past and continue to be honed and reconfigured to meet the demands of todays mining needs. This volume compiles papers of the workshop Blasting in Mines New Trends, hosted by the Fragblast 10 Symposium . The 17 papers provide a mix which highlight …
Authors. Peter Arroja Eshun University of Mines and Technology B. O. Afum UMaT Abigail Baffour Karikari Abstract. This paper investigates the causes of inefficient fragmentation and formation of toes in the Obra pit of Chirano Gold Mines Ltd and recommends best practices in order to produce optimum fragmentation to feed the crusher at a reduced cost and to …
Bench Preparation: Easily Avoid Hazards. One of the first steps in an optimized drill and blast workflow is the bench preparation. Apart from achieving optimal blast results, this also refers ...
This study compares base, hybrid, and voting modeling techniques to predict blast toe volume size. The investigation integrates independent models, explores synergies in hybrid approaches, and ...
The underground blasting for hard rock mining progresses in three major steps as drivage development, stope opening and production blasting. The discussions regarding the science and applicability of these three steps have
policies and regulations for pre-mining, mining and post-mining activities need to be incorporated and proper EMP has to be done. 8.4.1.1 Mitigation Measures for Land and Soil En vironment
1. Soft rocks. Be the first to add your personal experience. 2. Hard rocks. Be the first to add your personal experience. 3. Intermediate rocks. Be the first to add your personal experience.
Mining lithium from evaporating ponds is a unique method of lithium extraction. It involves pumping lithium-rich brine into large evaporation ponds and allowing the water to evaporate over time. The concentrated brine is then processed to extract lithium, similar to the process followed in brine extraction.
View Fatalgram and Best Practices. On Monday, July 16, 2007, a mechanic with 20 years of mining experience was fatally injured at a surface mine when he was struck by flyrock from blasting operations. …
Load the explosives. Be the first to add your personal experience. 4. Blast the rock. Be the first to add your personal experience. 5. Here's what else to consider. Be the first to add your ...
1. Introduction. Mining activity is mostly represented by these four main operations: drilling, blasting, loading and hauling. For a proper mine planning and design, all of these operations need to be carefully planned in such a manner that can prevent extra loads such as operating costs, environmental footprints, etc. Amongst these operations, …
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Blasting is a process of reduction of rocks or hard soil into fragments with the help of explosives. The blasting operation involves drilling of holes, installation of a detonator and charge, detonating the charge, and removal of debris. Fig 1: Blasting Operation in Hard Rock. In this article, we discuss how to safely conduct blasting ...
Jeanne Walls Anglo American Technical Services, Johannesburg, South Africa. Abstract. Venetia Mine is transitioning from open pit (OP) to underground (UG) operations. OP mining is planned to end ...
Therefore, the developed models can be used to predict the blast result mean size (X50) and the 80% percentage passing size (X80) for mining engineering blasting practices. View Show abstract
The bucket capacity of shovels and dumpers capacities in such mining combination increased to 12.5Cu.m, 15Cu.m, 20Cu.m and Dump trucks of 100Te, 150 Te 170Te, 190Te in our opencast mining ...
Staying behind a blast shield or blast mats for flyrock protection during blasting. Making sure everyone has evacuated the blast area before proceeding. Always following the supervisor's instructions. Scrupulously guarding the access roads to the blast area and otherwise maintaining good blast site control.
training video. This ACG resource is freely available as a streaming video. All underground mine workers will be exposed to drilling and blasting processes. The aim of this video is to provide workers with the critical knowledge on drilling and blasting to aid appreciation …
Case Study Dispute Resolution in the Mining Industry: Lessons Learned from the Effects of Blasting on Nearby Structures Krishna Kisi, Ph.D., M.ASCE1; Purushotham Tukkaraja, Ph.D.2; and Kenneth Eltschlager3 Abstract: Blasting is a common practice in surface mining operations to remove waste rock and to excavate mineral deposits.
The prevention of blasting related accidents depends on careful planning and the faithful observance of proper blasting procedures and practices. Even the slightest abuse or misdirection of explosives can result in serious injury or death to mining personnel or the public. Two cardinal rules must be acknowledged and understood when using ...
An effective blast design process is required before any blasting operation can begin. Figure 1 depicts (a) blast operation design and (b) blasting operation in surface mine. During the blasting process, the explosive is placed in different locations. It can be found on the surface of the rock or in the borehole of the rock.
Safety Precautions While Blasting. Here are the key safety considerations BICs and blasting crews should consider while shooting the blast: A red flag will mark the blast area for everyone's safety. Evacuate all personnel 200 meters from the explosives detonation site. Blow a shrill whistle before lighting the fuse.
Mining is big - probably much bigger than you may think. It is hard to grasp the sheer scale of mining, even if you are on the ground. This video gives some sense of scale of a single blast block ...
The traditional wedge-shaped cut blasting only has one type of cut hole, and uses a continuous charge, therefore it cannot produce good results for deep hole blasting of depth over 2 m. The comparison between conventional wedge-shaped and DCSD cut blasting is shown in Fig. 8. Similar to that in DCSD, the initiation time difference …
In 1867, Alfred Nobel discovered how to stabilize nitroglycerin by adding diatomaceous earth. This created the first stable explosive more powerful than black powder. The invention of dynamite marked a pivotal time and led to a step change in global industrialization. Dynamite made it easier to safely extract raw materials.
