نتایج جستجو برای: industry and mine

تعداد نتایج: 16860083  

2009
P M Stothard A van den Hengel

The project had a value of $431, 306. Of which $208,563 was in cash and $222,743 was in kind. The budget was fully expended during the course of the project. The chosen subject area was ‘Working at Heights’ because it is a high risk area that has application on mine sites, construction sites and heavy industry in general. Substantial documentation, mining industry input and effort was placed on...

2000
James F. Archibald Ferri Hassani

“Mine Backfill, An Operator’s Guide” is an extension of the electronic book on CD-ROM entitled “Mine Backfill 1998”, which was prepared for the CIM’s (Canadian Institute of Mining, Metallurgy, and Petroleum) centennial celebrations in 1999. Discussions with many operations revealed that there was an industry need for a backfill guide for front-line operator training and as a reference manual fo...

2009
Steven Rashin

Latin American labor power has decreased dramatically in the 1990’s. In spite of this phenomenon, Chilean subcontracted laborers in the copper industry organized and forced the government to increase social protection for temporary workers. What circumstances allowed for the successful unionization? I argue that the unionization of subcontracted workers is due to a change in the labor instituti...

Nitrogen oxides and carbon monoxide gases together with dust are known as the major pollutants arising during the blasting operations using the ammonium nitrate-fuel oil (ANFO) explosive at the Sungun surface mine, located in the northwest of Iran. The pollutants were monitored during some blasting operations at the mine. It was concluded that the gases and dust clouds initially went up to the ...

2006
Yusen Dong Linlin Ge Hsing-Chung Chang

Differential SAR Interferometry (D-InSAR) is an effective tool in monitoring land subsidence because of its greater coverage area and better resolution of height change. A series of Japanese Earth Resources Satallite-1 (JERS-1) images from 1992 to 1998 has been used in monitoring the mine subsidence in the test site of this study, one of the important coal mining areas in China. D-InSAR procedu...

Journal: :اقتصاد و توسعه منطقه ای 0
محمدعلی فیض پور گلسا صالحی فیروزآبادی مژگان بقایی پور

abstract tax can be discussed from various aspects and in the meantime, evaluation the tax system performance is very important. this article try to point this out in 2005 and 2008 (the second and final year of the forth development plan) in the iranian economy and in provinces separately. to enable this comparison and homogeneity, iranian provinces are divided into three groups (developed, les...

Hossein Memarian Majid Meybodian Mehdi Zare

Sarcheshmeh copper mine, with the final reserves of 828 million tons of sulfur ore and average grade of 0.74%, is known to be the largest open pit of Iran and most probably the second largest copper mine in the world. This mine is located in the seismotectonic zone of Central-Iran, and 23 Km away from the 150 Km long Rafsanjan active fault.In this study the vulnerability of the west wall of the...

The vulnerability of water bodies to contamination within the neighbourhood of open mine cast environ cannot be overemphasized. Evidence of radioactive trace elements associated with the target minerals in the Plateau State (Nigeria) showed the extent of this vulnerability. In order to address this challenge, the radioactivity levels of water samples from mine ponds, streams, wells, and borehol...

In the context of open-pit mine planning, uncertainties including commodity price would significantly affect the technical and financial aspects of mining projects. A mine planning that takes place regardless of the uncertainty in price just develops an optimized plan at the starting time of the mining operation. Given the price change over the life of mine, which is quite certain, optimality o...

Journal: :Environmental management 2011
Carl E Zipper James A Burger Jeffrey G Skousen Patrick N Angel Christopher D Barton Victor Davis Jennifer A Franklin

Surface coal mining in Appalachia has caused extensive replacement of forest with non-forested land cover, much of which is unmanaged and unproductive. Although forested ecosystems are valued by society for both marketable products and ecosystem services, forests have not been restored on most Appalachian mined lands because traditional reclamation practices, encouraged by regulatory policies, ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید