The conditions necessary for production of quarry deposits
besides external factors of the skin and the coefficient of rock, it is necessary to consider the following production conditions (Crushers):
1. the deposits in the vicinity of the sub-transmission lines and the location of the branch. In this part of the quarry should be clarified by the possible routes from the product. By exploring the quarry, in any case, you must explain the evolution of road traffic in the period of a year, artificial constructs of state, the need for the construction of the new extension and measures to improve existing roads (Sales Crushers mobile).
2. The possibility of construction throughout the year, on the side of the river or in the vicinity of alluvial deposits, we must consider that if the mine is at risk when flood, this is particularly important.
3. The preparatory work before mineral deposits, the possibility of using local trees in the following construction. Read the rest of this entry »
- As a direct or indirect impact on the environment.
- According to short or long term
- As reversible or irreversible (human scale)
- According to local or external
- Avoid or inevitable
Moreover, according to environmental aspects that change can be
- Actions that change the land use
- Actions that involve the emission of pollutants (solids, liquids, gases and other: noise, air wave)
- Actions that involve exploitation of resources (water)
- Actions that involve the modification of the landscape (almost)
- Actions that affect infrastructure
- Actions that change the social, economic and cultural (economic impact). Read the rest of this entry »
This leads us to define the concept of environmental impact of an activity: the difference in the environment between the time the activity begins, the time the activity takes place, and above all, the moment of completion.
These questions, which a few years ago were not perceived as a risk factor for the future of humanity, now viewed with great concern that is not always justified, since man is altering the environment since it has been able to do so, but certainly abuses in this field have led to growing awareness of the need to regulate these impacts. Either way, it should also be clear that the man needs the mineral resources today, and the need in the future. Another point to note is that mining is infinitely less powerful than other industrial activities, such as the development of civil works (visual impact, modifying the original media) and agriculture (massive use of chemical pesticides, fertilizers).
Thus, at present there are very strict rules about the impact that a mine can produce, including regulation of the composition of the liquid waste, emissions of dust, noise, landscape restoration, and so on., Which indeed often very challenging to meet the high economic cost, but undoubtedly have to be made to carry out the operation. Read the rest of this entry »
* Salting, drying and water shortages because of the enormous quantities of fresh water required for the extraction process
* Release and migration of heavy metals in the ecosystem
* Displacement of thousands of tons of ore causes sedimentation in rivers, vulnerability to wind and water erosion
* Environmental liabilities after the exploitation and destruction of the original ecosystem of the site
* Migration of highly toxic cyanide in groundwater and surface water and ecosystem
* Drainage acid, which is a major threat particularly in the extraction of sulfides.
Harmful effects of cyanide
Current technology for gold mining to separate uses cyanide gold from the non-valuable minerals. Cyanide is a highly toxic, the lethal dose for humans is 50-200 mg. However, on reaching the environment cyanide, heavy metals are linked to cyanide in the long run are the biggest problem. Cyanide breaks down relatively quickly, however heavy metals remain forever in the environment.
Acid drainage is a serious problem in many metal mines, since metals such as gold, copper, silver and molybdenum are often associated with sulfides. By not controlling acid mine drainage, filter streams, rivers and groundwater. Acid water and heavy metals are lethal to fish, animals and plants and can still cause damage to the environment indefinitely after mine closure.
Opencast mining and the original ecosystem Read the rest of this entry »
Over the past century, world population quadrupled. This huge burden on the Earth, it is displayed only on climate change but also the scarcity of resources and energy. The great geopolitical power, aware of the increasing difficulty of access to natural resources, aimed at ensuring its supply of energy and materials. The growth in prices due to resource and energy shortages – such as minerals, metals, oil and gaz – produce geopolitical turmoil and a new boom in the extractive industries sector.
Between 1999 and 2006 the average price of crude metals trebled. Since 2005 the price of uranium has increased sixfold and the price of copper has doubled. Never before have large mining consortiums have had a very promising future.
During the last five – ten years, there have been almost all the conditions for rapid (re) territorial and economic colonization of the South, or that today is called the “second colonization” or “second gold rush “. Now, if economic entities, especially multinational corporations, have replaced the Western nation-states in their role as colonizers.
Globalization is the phenomenon of global integration faster and faster crecienda economic interactions, technological innovations, cultural influence and political structures. The neoliberal economic model appeals to states in the South to open their borders to direct investments by Western companies, often with the discourse of “free trade fair competition” and the idea that only foreign capital, technology and economy oriented export can help you out of the depression. Read the rest of this entry »
Jessica Simpson lately revealed up together with her narrow form at the release of the Woman’s Choice at Macys Southern Shore Plaza in Costa Mesa, Florida. The Dukes of Hazzard superstar with confidence revealed off her new baby-post body technique in an actual red superstar top as he introduced together with her young sis Ashlee Simpson at the occasion.
Mom of Jessica Simpson was said to lose 60 weights in six months following childbirth to Maxwell Attracted Brown, her little girl with fianc Eric Brown, on May 1st 2012. Musician reveals off narrow post-baby body technique at outfits even. Know the latest information and new while visiting Matt George blog.
The Come on over songstress, who became the representative of Bodyweight Viewers after inking a $4million deal with the company, began the weight-loss in this summer with a tight method. Ms Simpson launched on a 15-day shake diet plan, beginning with drinks a day for times, followed by drinks a day for another times, and shake a day for times.
The shake plan by Jessica former personal chief cook carefully followed the Bodyweight Viewers point technique with a choice presenting low-fat foods such as pulled girl beans, egg white eggs, poultry stay, and Japanese people soba dinner and shrimp skewers. Apart from maintaining herself to a Bodyweight Watchers-controlled diet plan, Jessica Simpson also exercised times per week with superstar instructor HD Pasternak to reduce her kid weight.
Many people say that there is money in mining. However, mining can be a very dangerous and risky business. Aside from the fact that it can cause negative reactions to the health of miners, mining can also put their life at risk. Nonetheless, companies and industries still pursue this kind of business due to mining’s high return of investment. According to a mining expert named Richard Fifer, there are a lot of things that workers or miners can do in order to protect themselves from the possible hazards that mining can cause. Richard Fifer is considered as the father of Panamanian mining and has been very famous for his works and contributions to the production of different minerals and land resources. This is the reason why Mr. Fifer is also very well aware of the various techniques and guidelines that miners should abide in order to reduce the risk mining accidents and catastrophes. Below are some of Richard Fifer’s selected guidelines in promoting safety in mining.
Richard Fifer stressed the importance of following the right policies, equipment, manuals and training in order to improve safety in the field of mining. It is necessary to use proper equipment and mining gears in order help protect the employees of a particular mining company. Mr. Fifer also concluded that the advent of technology has tremendously helped miners use effective tools that can extract minerals and resources without putting the lives of the workers at risk. Some of these tools and gears pointed out by Richard Fifer includes the hard hat, ventilation fans, forklifts and as well as the use of appropriate mining clothes or attire.
The use of a hard hat is very important in mining since it helps protect the miner’s head from any type of trauma or injury that could cause severe damage or could also be potentially fatal. This is actually considered as very basic equipment that every miner must carry or wear at all times while working on site. On the other hand, the use of ventilation fans is also classified as essential especially for mining sites that are located underground. These fans aid in the proper circulation of air especially in tight and enclosed spaces. Without these instruments, it is very likely for miners to have different kinds of lung problems and diseases. Forklifts are also very important since it helps miners transport large and heavy debris from one place to the other. The use of forklifts can prevent miners from having a hard time transporting large objects that could also cause back strains and body aches. Last but not the least, wearing of appropriate mining uniform can likewise protect the entire body from any type of mining hazards. These are just some of the tools and precautions miners must take seriously according to Richard Fifer.
Manufacturing plants, HVAC technicians, and design engineers all use pressure testing equipment both in the field and in-house. Portable kits are often used in the field as they come with pipe adapters to fit a wide range of machinery. Accurate pressure testing is important when you are dealing with hydraulic fluids. Minimess pressure testing equipment is of the highest standard, able to perform accurate measurements with a leak free test. If you want to guarantee compliance with industry standards and regulations, you need equipment you can trust.
Pressure tests are performed for a variety of reasons. A hydraulic machine could explode under pressure or stop functioning. There is also the danger that a machine or system won’t stop functioning under pressure. The wrong amount of pressure could also cause leaks of dangerous hydraulic fluids.
Minimess pressure testing equipment features highly accurate analogue pressure gauges. Pressure testing is extremely important for any hydraulic machines or system being put into use. The equipment must met certain pressure standards for reliability and safety. If pressure testing can be accomplished quickly and efficiently, the proper functioning of the equipment can be assured as well as the safety of anyone working near or using the equipment.
A pressure tester should also have various gauge adapters to test a wide variety of pipes and fittings. Visit Hydrotechnik to see a full range of test kits from economy-priced models to kits featuring six gauge fixed metal test boxes. BSP, Metric, JIC, ORFS based kits fill the needs of a wide variety of users. While there is a variety of manufacturers and distributors of pressure testing equipment, it is vital to buy quality equipment. Price should never be the first consideration as pressure testing is usually safety related, but in today’s economy, companies have to find reasonably priced test equipment to stay competitive.