Thursday, 24 October 2019
Nature of Geothermal Resources- The Earth's Thermal Engine
Nature of geothermal resources are explained by many researchers from all works of lives. Most of the information provided in this articles is purely educational information and not intended to propose or produce as a research paper. This article was produced as part of published journal research presentation for graduate school of engineering at Kyushu University. Some of the information provided in this article may relate to an original journal or research papers.
Saturday, 12 October 2019
Thyphoon Hagibis Hitting Japan and Many Lives are in Danger 12th October 2019
Typhoon Hagibis is strongly hitting the Tokyo Metropolitan area and Shizuoka Prefecture and many lives and properties in danger and some have already being affected by the most dangerous typhoon. This Typhoon Hagibis has caused catastrophic damage to the people and the properties and infrastructures.
The typhoon has already started and will continue for the next two to three days.
According to the NHK live news, the Japan's Meteorological Agency has issued heavy rain emergency warnings for Tokyo and Shizuoka, Kanagawa, Saitama, Gunma, Yamanashi, Nagano, Ibaraki, Tochigi, Fukushima, Miyagi and Niigata prefectures. It is the highest level of warning in the JMA's five-level warning scale.
Live news on latest updates regarding typhoon hagibis refer to the link below;
https://www3.nhk.or.jp/nhkworld/en/live/
The typhoon has already started and will continue for the next two to three days.
According to the NHK live news, the Japan's Meteorological Agency has issued heavy rain emergency warnings for Tokyo and Shizuoka, Kanagawa, Saitama, Gunma, Yamanashi, Nagano, Ibaraki, Tochigi, Fukushima, Miyagi and Niigata prefectures. It is the highest level of warning in the JMA's five-level warning scale.
Photo taken from Youtube live stream |
Live news on latest updates regarding typhoon hagibis refer to the link below;
https://www3.nhk.or.jp/nhkworld/en/live/
Tuesday, 8 October 2019
Small Scale Mining in Papua New Guinea (PNG)
Small-scale mining in Papua New Guinea was practiced for more than a century when the first ever gold discovery was done in the Sudest Island in in the Milne Bay Province in 1888. The small-scale mining operation then extended to other neighbouring islands of Missima and Woodlark and further to the other parts of Papua New Guinea.
It is also known that about 100 years ago there were also miners mining on the Yodda and Gira fields in Oro Province and 10 years later at Lakekamu in Gulf Province in 1920s. These discoveries led to the development of major mining operations in Papua new Guinea.
Gold is still actively produced in Bulolo Wau area as well as other areas in PNG today.
The early miners were able to open up the Highlands in the 1930's and located gold at Kainantu, Kuta and Porgera. Others discovered the Sepik areas and found gold at Maprik and Amanab. The early miners also mined at Kupai on Bougainville near the closed Panguna Mine.
Gold remains an integral part of the cash economy in areas where gold has been traditionally mined. The local landowners are testing their own land and finding new gold anomalies throughout PNG.
today we have more than 50,000 to 60,000 small scale gold miners working at various alluvial gold districts throughout he country using various mining methods.
The most commonly known basic mining methods are sluicing and panning. The miners sometimes use water pump and other motor powered machines in their operation to either go semi-mechanised or fully mechanised.
Note:
The this article is an extract from a publication by Department of Mining Papua New Guinea,2001.
It is also known that about 100 years ago there were also miners mining on the Yodda and Gira fields in Oro Province and 10 years later at Lakekamu in Gulf Province in 1920s. These discoveries led to the development of major mining operations in Papua new Guinea.
Gold is still actively produced in Bulolo Wau area as well as other areas in PNG today.
The early miners were able to open up the Highlands in the 1930's and located gold at Kainantu, Kuta and Porgera. Others discovered the Sepik areas and found gold at Maprik and Amanab. The early miners also mined at Kupai on Bougainville near the closed Panguna Mine.
Gold remains an integral part of the cash economy in areas where gold has been traditionally mined. The local landowners are testing their own land and finding new gold anomalies throughout PNG.
today we have more than 50,000 to 60,000 small scale gold miners working at various alluvial gold districts throughout he country using various mining methods.
The most commonly known basic mining methods are sluicing and panning. The miners sometimes use water pump and other motor powered machines in their operation to either go semi-mechanised or fully mechanised.
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Abandoned Trommel at Tuguba River Mine Site in Tamo, East Sepik Province |
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Mechanized Mining Equipment Parked at an alluvial mine site at Tuguba River, Tamo in the East Sepik Province |
Note:
The this article is an extract from a publication by Department of Mining Papua New Guinea,2001.
Wednesday, 2 October 2019
Stability Analysis of Tailings Dam - Brief
October 02, 2019Mine Waste Management, Mines in PNG, Mining Engineering, Slope Stability Analysis
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Stability of Tailings Dam describes the tendency of a dam to resist failure. Failure encompasses both mass movements in which large volumes of rock/soil or dam embankment materials slip and smaller-scale displacements such as minor tension cracks on surface, rock falls etc. All types of rock-slope failures are important as they can have a significant impact on Tailings dam, mines, properties and lives either on the slope or at its base. Instability cause by mass movement of rocks along a plane occurs in four ways: plane failure, wedge failure, toppling failure and circular failure.