Different Methods of Mining Coal

Different methods of coal mining are adapted to dig out the natural coal from the earth. Among them, Surface mining method is applied for producing coal of about nearly 40% in the world. The coal deposits are found on the surface of the earth and make the mining easier for the coal-miners. The various types of coal mining are contour, mountaintop removal and strip mining.

Strip mining is adopted in areas, which has leveled landscape. The surface coal is exposed when the earth covering them is removed in strips. When the whole earth concealing is removed from the surface the coal that lay beneath is exposed. They appear in blocks and are usually extracted either by drilling or blasting. Once the strip is free of coal or goes empty, the strip mining process is continued with the next strip that lay adjacent to the former.

The contour mining is used to remove coal from the layer following the contours found along the ridges of a hill or landscape. The commonly used places for this type of mining are areas with rolling to steep terrain. This method may create landslides and erosion troubles. Using the freshly cut overburden to refill the mined areas rectifies these problems. Strip mining has its own limitations and when the process of strip mining reaches a specific stripping ratio, it may not yield you profit when continued.

Mountaintop removal coal mining can be understood by its name. Removing the mountaintops exposes the coal. This method also involves disposing of mining overburden that is associated with mountaintops removal in nearby valleys. This method is a combination of area and contour strip mining methods. This process creates adverse changes in the topography like creating head of hollow hills and filling valleys with mining wastes.

Latest open cast methods can reveal higher proportion of coal deposit than the underground mining methods.

Deep mining or underground mining is applied to dug out coal that lay underneath the surface of the earth. The primary underground mining ways are Continuous, Longwall, Shortwall, Retreat and Blast Mining.

Longwall mining method is adopted for about 50% of underground mining. This method involves a complex machine with a revolving drum that sways mechanically back and forth across the coal deposit. This method yields high production and ensures safety. This method has sensors that can detect the quantity of remaining coal in the seam and robotic controls contribute to the efficiency of the process.

Continuous mining method is applied for about 45% in underground coal mining. The machine used in this method has a huge revolving steel drum that is facilitated with tungsten carbide teeth to extract the coal from the seam.

Blast mining occupies less than 5% of the whole underground mining in USA. Explosives are used to break the coal seam in this method. The extracted coal is collected and transported to the central area using conveyors or shuttle cars.

Shortwall mining covers 1% and the method is somewhat similar to longwall mining. Retreat mining method employs pillar or coal ribs to support the roof of the mine. This is the most dangerous method as it involves risk of falling roofs that might trap or crush the workers in the mine.

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24 Hours in Your Wallet

Every writer faces time restrictions. The trick is to find enough time in the day to spend writing. There are several things I do to find more time to write. Negotiate every one of these ideas to maximize your time of opportunity.

Review your ideas that are laid out in front of you. I use note cards and stick notes on my desk to keep ideas around me. This kick starts the thinking process. I also put a current project I’m working on as a desktop background on my computer as a constant reminder to work on that particular task. Every time I am on the computer, there’s a picture of a document that needs worked on starring me in the face.

Push through the fog even if you have a headache or are feeling bad. Be your own nagging boss that says, “Get to work.” Think of a reward that you’ll give yourself when the work is done and put a picture of it where you see it every day. The reward has to be worth it, not just go out to dinner or something lame like that. I enjoy playing pool and set a goal to not play until I finished a project. Stick to it. That pushes me to finish what I started faster. Delayed gratification is a great tool to use. Use every great tool available.

Be as organized as possible. I know folks that can play office all day and not accomplish anything of real value. Focus on the work as a writer, but keep a clean environment.

Use the best software for the project your working on. I use New Novelist software for book type writing and Movie Magic for screenwriting. Download a free trial of Movie Magic and see if it’s right for you. Use the best software you can to maximize your effectiveness of time management and organization.

Eliminate the unnecessary clutter. Work is work, it doesn’t matter what kind it is, whether it’s dishes, digging a hole, or writing. A proper mindset on the value of work is vital. Sweat Equity is the best tool in the world.

Set goals that are difficult but possible. Write three articles a day, three chapters a day, or three scenes a day. Make time your friend and not a thief.

Role-playing allows me to step into someone else’s shoes and get work done that I might not of accomplished otherwise. Think stat, like you hear a doctor say. I’ve got to operate on this chapter, stat or I’ve got to dig up the research and uncover the true like a good detective. This exercise helps me more than you could possibly understand. An exercise like this can make an ordinary writing assignment seem extraordinary, removing the boring out of work. If you’re having fun, then you’ll get more done.

Steal every minute you can from the day. Take your laptop with you to work and pull it out on lunch break if you work a regular job too. I take my laptop fishing with me. When it’s slow and the fish are not biting, I can kick back and type away, glancing at the pole once in a while. The thrill of fishing is the catch, not the wait. Work while you wait. That may sound extreme, but don’t knock it until you try it.

Gather all the best tools and use those to fight against the time steelers.

Copyright© 2007 – AJ Dowell

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The Forgotten Investment, Silver

Most of the talk these days centers on gold and gold investing. Its brethren, silver, appears to take secondary role as an investment metal and is thought of more as in jewelry and flatware than as a money making investment.

However, history shows that silver has been a medium for storage of wealth for thousands of years and revered one civilization to the next. It has been widely used in mintage of coins from the Greeks to the Spanish. In fact, silver coins were in wide circulation until 1965 and silver certificates were also redeemable into the precious metal.

Silver has qualities which also make it a sought after industrial metal. It has the highest electrical conductivity of all metals and its ductile and malleable. It has been used in electronics, mirrors batteries, photography and numerous other ways. It has been this trade that has had the most influence on the price since the late 1960’s.

Silvers evolution has extended to the financial markets. As markets have grown futures and ETF’s have had a larger impact. This change in this markets have allowed speculators to participate in silvers price movements. Lately there have been widely circulated news stories concerning the price manipulation of the price of silver. This only goes to show the importance of the metal and that in a free market the price would be much higher than it actually is.

Silver has been on a bull run since 2003 due to the fact that there has been growing demand by both investor and manufacturing alike. At the same time supplies and new finds are declining and restricted. Demand SLV the ETF for Silver has been increasing thereby outpacing supplies of available shares, forcing the custodian to issue new shares and in turn buy more physical silver.

The current economic uncertainty has also played a role in the demand for silver as more investors have purchased it for wealth protection and capital appreciation. This has increased the demand and its price. This trend will most likely continue as the economy faces increasing and renewed challenges.

Scrap silver has become valuable again which speaks as to the current market situation. As silver regains acceptance as an investment vehicle for wealth protection, as it had previously. Demand will continue to grow and compete with industrial sector for the metal. The outcome seems fairly obvious since the metal supply is in limited supply.

It is obvious that silver along with gold should be a precious metal that is included in one’s portfolio that seeks wealth protection and capital appreciation. Both technical and fundamental factors indicate that it is and opportune time to invest in gold and silver.

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