Glossary of Mining Terms

A reference table for basic element data, with related information on average crustal abundances, isotopes, water quality standards, common minerals and more.  
                                           

Archive for January, 2009

Various types of Mining Equipments

Thursday, January 22nd, 2009

The mining industryis one of the most dangerous working environments. Mining equipments are instruments that are commonly used in extraction of minerals from the earth surface. In the past, ancient times, miners used to excavate minerals and metals by using simple hand held tools. With the introduction of automation and modernization, today’s mining world enjoys the benefit of many types of mining equipments that are used specially for mining purposes. Modern day mining equipment is powered mainly by electricity and hydraulic energy.

Mining equipments are available for various types of mining methods that are performed around the world. There are various types of mining equipments available in the world. Some of them are industrial shredders, drilling equipment, blasting equipment, drill rigs, hammers, mine winders, blasting machine, Mining Locomotive, well drilling machine, industrial crushers, cutting machines, drills, loaders, blasting devices, Track Drill, Rock Drill, etc. Some examples of mining equipment that is used extensively in mining operations are: hard hats, clothing/gear, ventilation fans, rock dusters, tractors, earth movers, water jet pumps, cutting machines, drills, loaders, blasting devices, dozers, trucks, cranes, fork lifts, draglines and many other machineries. A mining light system is important mining equipment used for all mining processes. A mining light system increases the efficiency and the speed of mining operations and guarantees optimum results in mining process. A mining light might consist of a heat sink, LED or laser, magnetic switch or a focusing cone. Gold pans, sluice boxes, metal detectors, digging tools, gold vials, snuffer bottles, etc., are equipments used for gold mining. Various kinds of large mining excavators are available for mining field. The mining excavators using advanced technology help in reaching the international level of performance in mining processes.

There are mining equipments available specifically for Surface mining processes such as open-pit mining, strip or area mining, quarrying, contour mining, mountaintop removal, and placer mining. For example, some of the Open Cast Mining Equipments are Rock Drills, Drifter, Paving Breaker, DTH Hammer, Wagon Drill, Slim Drill LD-4, Pneumatic Crawler Drill, TCT Drill Steel Grinder, and Cross Bit Grinder. There are excellent mining equipments available for Sub-surface mining processes such as shaft mining, drift mining, borehole mining, slope mining, and hard rock mining. Similarly, there are special mining equipments for deep underground mining processes such as Longwall mining, Continuous mining, Blast mining, Shortwall mining and Retreat mining. For example, some of the underground Mining Equipments are Junior Simba, Mucking Machine, Slurry Pump, Exhaust Fan, Air Mover, Cement Injection Pump, Pneumatic Power Pack, Turbo Light, Spare parts for Atlas Copco Drifter BBC-120F, Simba Junior, BMS-46 Feed Motor, BSP 10 Pneumatic Rod Catcher, Atlas Copco Cavo 310 Loader, Pneumatic Raise Climber, Eimco Loader & Hopper.

The use of right mining equipment is very essential for increased productivity. For example, the use of large mining equipment in surface mining maximizes the recovery through the excavation of one or more coal seam deposits in the large area surface mines.

Many features, restrictions and criteria need to be considered while choosing the mining equipments for a mining process. The two most important factors for choosing any type of mining equipment are its strength and durability. Cost is also an important consideration while selecting mining equipments.

Mining is a very dangerous process. If a wrong piece of equipment or tool is used for a specific mining purpose, it might lead to disaster. Therefore it is important that everybody involved in the mining operation must know exactly how to use their mining tools properly. Each worker should be properly and thoroughly trained to use every part of mining equipment they will be using. Also the workers should be educated about the safety measures in using the mining equipments.

Hazards of Cyanide in Mining

Wednesday, January 7th, 2009

The use of cyanide in the mining process of metals such as gold and silver, leads to severe environmental risks. The use of cyanide in gold mining has led to environmental disasters in many countries across the world such as the United States, Canada, China, Guyana, Bolivia, Zimbabwe, Philippines and Ghana. Recently, Community groups and NGOs in Europe and the United States issued a report which exposed the danger of unregulated cyanide compound releases from mines around the world.

Cyanide is deadly for human beings as well as the environment. The main risks associated with the use of cyanide in mining process are exposure of workers to concentrated hydrogen cyanide gas, leaking of cyanide into the environment and exposure of surrounding communities to cyanide due to accidental releases. During the mining process, the release of cyanide along with other toxic chemicals such as arsenic, lead, cadmium and mercury, leads to harmful effects and permanent damage to some species of animals, plants and human beings. It may also result in deforestation, soil erosion, land slides, and contamination of underground water.

The release of arsenic and other poisonous chemicals during the cyanide leaching process is very dangerous. The cyanide-leach wastes of mining process have the potential to negatively impact municipal sewage and water treatment procedures. It also potentially increases the human intake of several toxic substances. All the cyanide-containing water bodies formed during gold mining milling operations are hazardous to wild animals and migratory birds such waterfowl and bats, if not managed properly. Even accidental leaking of cyanide solutions into rivers and streams will kill fish and other aquatic animals massively. Especially, freshwater fish are the most cyanide-sensitive aquatic organisms.

Workers at gold mining operations can be exposed to cyanide during the heap leaching or tank extraction process. Cyanide is very harmful to human being as it acts as a poison to the human body. Severe breathing difficulties develop when cyanide is inhaled, swallowed or absorbed through the skin. Cyanide blocks the absorption of oxygen by cells, making the victim to suffocate. Exposure to concentrated levels of cyanide can be fatal to the human beings. Exposure to very low concentration of cyanide may cause cancer in people or animals.

We are not certain about the presence and concentration of numerous cyanide compounds in mining wastes. We are also not sure about the presence, persistence, and toxicity of cyanide and related compounds in the environment. But as the effects of cyanide are getting more obvious, the opposition to cyanide leaching in gold mining is also increasing.

The use of cyanide in mining causes an unreasonable risk to the health of people, wildlife, and fish. As the hazards of cyanide in mining process are very much obvious, it is the responsibility of the Government and mining companies to take essential steps. The International Cyanide Management Code provides direction and guidance on how to manage cyanide to ensure protection of workers, the environment and the communities adjacent to mining operations. Mining waste should be regulated in the same manner as other chemical or industrial waste. The public needs enough awareness about mining hazards. The government should ban mining projects that result in environmental hazards in order to prevent ecological disasters. Citizens must also oppose such mining projects. Many organizations in countries such as United States, Canada and Turkey have started associations for banning cyanide leaching in mining.






 

HOME    ABOUT US    RESOURCES    FAQ's    CONTACT US    SITEMAP    ENGAGEMENT RINGS
Copyright © 2003 YourCompany Inc. All rights reserved.