Nigeria is rich is solid mineral resources, such as: Kaolin, gypsum, mica, clay, tantalite, iron ore, gemstone, silica sand.
Read More
Recycling concrete &building rubble is not only able to bring profit to investors, but also good for environment protection.
Read More
By absorbing the advanced technology from the world, we researched and designed PF series impact crusher.…
Read More
Base on the plentiful experience of producing and marketing of impact crusher, Sofol R&D institution…
Read More
Adopting technology from the world, PY Series spring cone crusher has an excellent performance in secondary…
Read More
The vibrating screen is a kind of sieving equipment of international advanced level, developed by our…
Read More
Sofol VSI Series vertical shaft impact crusher is designed by reputed German expert of Sofol and every…
Read More
3 Corresponding author : [email protected], 0244739989. Abstrac t. Construction site workers who perform manual tasks end up su ering some injuries due to the. strains of their routine work ...
Details
Artisanal mining is generally a small-scale practice where the basic tools and manual labor are generally ... Particle size distribution was analyzed using the hydrometer method (Bouyoucos, Citation 1962) while pH was determined using pH meter. Organic ... More studies are however required to understand the specific effect of the mining ...
Details
This review presents a systematic synthesis of the various methods and measures that have been used to investigate the effects of coal mining in India. A total of 87 peer-reviewed articles were collected for each year from 1970 to 2014 using a keyword based search. The articles compiled were analyzed and categorized according to the …
Details
Mining will remain a necessity, since even the very best recycling rates cannot provide the amounts needed of various commodities. To avoid or at least drastically curb the damaging side effects of mining and related activities, a different approach deems necessary and paramount – the approach of sustainable mining.
Details
Coal mining - Underground, Surface, & Drilling: The various methods of mining a coal seam can be classified under two headings, surface mining and underground mining. Surface and underground coal …
Details
An official website of the United States government. Here's how you know
Details
Among all underground mining methods, the sublevel caving method is a common method with moderate development requirements, a high production rate, and a high degree of mechanization and flexibility. None of the manual planning methods and heuristic algorithms used in commercial software will lead to a truly optimal schedule.
Details
two methods of underground mining in the West: 1) room and pillar with contin-uous miners, and 2) longwall mining; recent underground mining technology developments in …
Details
Manual materials handling in mining: The effect of rod heights and foot positions when lifting "in-the-hole" drill rods ... Experimental task ITH drilling is a heavy manual handling industrial mining task. Observation from video analysis revealed that the operators used drastically different foot positions ranging from 0o to 90o when ...
Details
The changing relationship between large-scale mining and ASM outlined above has implications for employment within the mining settlements. In Table 1, the Ghana Population and Housing Census Reports show that there has been a decline in formal mining employment in Obuasi.In 1960, when there was virtually no galamsey …
Details
The room-and-pillar technique is a self-supporting mining method in which part of the ore is left unmined as pillars. To increase the mining efficiency, the pillars are later recovered partially or completely. This research aims at evaluating and comparing four methods of pillar recovery, namely, 'pocket and wing', 'open ending', 'split and fender', …
Details
Abstract. With the introduction of advanced technology, different aspects such as communication, minerals handling and transportation and responses to emergences, safety, production, and environmental protection in mining operations have improved. Technological advancement has played a very pivotal role in the prevention of mining …
Details
Materials recovered by mining include base metals, precious metals, iron, uranium, limestone, etc. There are three methods of mining; conventional or manual mining, semi …
Details
researcher-made questionnaire was formulated to gather data on mining and ore extraction methods employed by different mining firms in the Province of Palawan, their effect on the environment and people. The study is well-aimed to find out whether the mining companies are compliant with the different government regulations.
Details
In rivers, construction grade sand occurs in different sources—active channels, floodplains, and river terraces. Different mining methods (mechanical or …
Details
Mining method selection is the most fundamental activity of a mining study, because everything else depends on it. ... as well as to estimate the effect of production cost on the ranking of mining methods, production cost per ton mined was included as a criterion. ... Engineering Rock Mass Classifications: A Complete Manual for Engineers and ...
Details
The mining industry is a very risky venture in comparison with other industries since it depends on orebody estimates and decision makers must consider many uncertain inputs together [12, 13].Quite a lot of factors must be considered during the process of mine planning to accomplish the main objective of maximizing the value of the …
Details
The results showed that the end plate at 5th lumbar is experiencing the maximum stress development, which is relevant to the industries especially manufacturing sector in order to provide a direction for ergonomists in the modification of jobs for workers who perform manual lifting.
DetailsMining Methods. March 2010. DOI: 10.13140/RG.2.1.4027.9924. Authors: Hassan Z. Harraz. Tanta University. Citations (1) Figures (2) Abstract …
Details
Uranium, a cornerstone for nuclear energy, facilitates a clean and efficient energy conversion. In the era of global clean energy initiatives, uranium resources have emerged as a vital component for achieving sustainability and clean power. To fulfill the escalating demand for clean energy, continual advancements in uranium mining …
Details
Rising costs in the mining industry have necessitated a search for alternative methods for the recovery of metals from deposits that are no longer economically or environmentally exploitable by ...
Details
The transition of mining from opencast to underground is foreseeable and will be intensified in the next 5–10 years from now. Additionally, as per the Indian coal inventory data, about 40% of coal deposits below 300 m of depth are amenable to being extracted using underground mining methods, as shown in Fig. 3. Keeping these …
Details
opening (Peng, 2008). Despite evolving mining techniques and. practices, these events continue to occur. Between 1983 and. 2013, there were nearly 400 cases of reportable dynamic failure ...
Details
In other countries, for example Mali, artisanal mining is interpreted by the government as 'operations engaged in the extraction and beneficiation of mineral commodities sourced from primary and secondary deposit, outcrops or sub-outcrops, using manual methods and traditional processes' (Konate, 2006: 108) while in the case of …
Details
Although, the need to have sustainable mining methods is recognized, and relevant departments and enterprises have also done a lot of exploration and research work, but the effect is not obvious, which has become a challenge for mining enterprises and natural resource management departments. 3.2. Challenges in ecological restoration …
Details
1. Introduction. There have been increasing discussions and attempts by many governments and institutions to formalize artisanal and small-scale mining—a largely informal, unrecognized, low-tech, and labor-intensive form of mining—due to its snowballing environmental degradation and the potential to contribute to sustainable …
Details
1. Erosion. One of the effects of mining on the environment is erosion. The enormous Ok Tedi Mine in Papua New Guinea is a perfect example of how nearby areas can be significantly impacted by the erosion of exposed slopes, mine dumps, tailings dams, and the resulting siltation of drainages, creeks, and rivers.
Details
This inherited legacy of environmental damage from mining is not indicative of the mining cycle today. Now, mine closure and a number of activities to mitigate the impacts of mining are an integral part of all metal mine planning and mineral development from the discovery phase through to closure: Reclamation. Soil treatment. Water treatment.
Details
However, so far, these methods have only been applied to known mining areas. The challenge in expanding these techniques is the immense amount of data required to train AI models, which in this ...
Details
The paper draws on 74 interviews with artisanal and small-scale gold miners and other stakeholders to investigate communities' perceptions of the effects of ASM …
Details
Furthermore, research in underground mining has focused on different kinds of problems. For instance, Marras and Lavender (1991) investigated the effects of different models of scaling bars (a hand tool used in underground mining), mine roof height and the method of tool use on the activity of trunk muscles.
Details
Introduction. The purpose of this paper is to explore the integration of technology and stoping systems. For the last hundred years the South African narrow reef mining …
Details
Abstract. Since the early 1980s, the longwall method has developed into the safest, highest producing and most productive form of underground coal mining, rivalling the performance of many surface mining operations. This is due in large part to the rapid uptake of computer based technologies for automation and monitoring; improved …
DetailsWe investigated the effects of following five important geo-mining parameters on layering and dispersion of methane in tailgate: 3.2.1. Air velocity. The effect of air velocity was studied by varying the velocity in range 1–3 m/s at 0.5 m/s intervals at different tailgate widths varying in the range of 3.0–4.8 m at 0.6 m intervals.
Details
Manual mining is more environment-friendly and the quantity of mining is practically low. This method is practiced in many developing and underdeveloped countries having small rivers with limited river bed resources (Plate 3.2). Usually country boats and specially …
Details
Sofol is a well-known crusher and grinding mill manufacturer that offers equipment and solutions for customers from aggregates, mining and mineral grinding industry.
You can leave your message here, we'll send you an Email immediately.
Online ChatCopyright ©2000- 2024 Shanghai Sofol CompanySitemap
PE series jaw crusher is usually used as primary crusher in quarry production lines, mineral ore crushing plants and powder making plants.
GET QUOTE