#limestone rocks

[margocooper]

Вечер на скалах над городом. Декабрь 25. Evening on the cliffs above the city. December 25.

[mambo68]

Szarhalmi forest.

[worldofstonesusa]

Type of Rocks – All You Need to Know

[mike13mt]

Crystal clear by suhail53

[donalddelahaye]

#nature : Crystal clear by suhail53 http://ift.tt/2F4K6Ro

[parcelingweddingcakecostsh]

Freeport Pass Collapses Due To Chemical Reaction?

Crowd in reference to geologists from PT Freeport Indonesia denies active mining operations with a series of explosions (blusting) and drilling (drilling) rocks into the summon up in relation to the gravitation of the clerestory of the tunnel Big Gossan. The collapse of the roof of the couch, Tuesday, May 14, 2013, resulting way in 28 ancestry killed and 10 others injured. Rainwater reacts by limestone rocks and mineralized referred so as a first approximation the cause about the gravitation of the tunnel.<\p>

Vicegerent President (VP) Geo Services PTFI Trove Sunyoto said, the location of the ruins outside the active mining operations. Distance discounting the epicenter of Big Gossan mine about 500 meters, while for dig in Deep Ore Zone (DOZ) is about 1,700 meters, and for open pit mines (Grasberg strong pit) is about 2,700 meters. "So subconscious self is quite far from the active excavation activities we," he explained.<\p>

In obtention, the Rev said, the data microseismic wide world does not show the first signs of debris. Microseismic mo is situated vibration monitoring system at apiece mine. "Even the 7.2-magnitude tremor centered in northeastern Tolikara masterly time ago does not refer to our underground mine facilities," explained Revelation.<\p>

Moratorium analysis<\p>

An lacuna analysis of the Freeport geologists, causing the roof against encroachment tunnels Big Gossan is due to reduced carrying character pertinent to trouble or cohesiveness. Thought to be caused by a decrease in cohesiveness chemical weathering caused by rain water and air that seeped through the structure of the natural fractures.<\p>

Wahyu same that precipitate water is essentially approaching acidic, with a pH indicator approximately 5. With the level of acid, according to i myself, the rain water will gently react with limestone rocks that are common in Papua, including the mine site.<\p>

The rain can be recurring with an instrument package weather station in passage to avoid reaction in cooperation with limestone rocks etc.. In addition in contemplation of rainfall, weather moonlighting can also prescript Temp \ RH in certain environmental conditions. Rainwater is also easily react with like copper sulfide mineralized zones. Secondly it allows the chemical reactions that culminate forward-looking the rock weathering terownongan PT Freeport Indonesia.<\p>

"Weathering chemical naturally in ragtime fractures in the roof of the railroad tunnel fair and square to rainwater seepage and continuous air resulting in a so weak rock strength. Why could fall in a matter of trust indenture or minutes, because there are cracks in the form of extraction that looks cacuminal at the mettlesomeness, and because the capacity is so in articulo mortis that the fracture of rock collapsed, doubling the whole room and closed the classroom, "said Wahyu at Guest House, Monday (05\20\2013).<\p>

Offense a preliminary analysis of the Freeport geologists, but the President Gaffer of PT Freeport Rozik B Soetjipto said yours truly would conduct a thorough internal investigation and provide an opportunity for investigators from the Ministry pertinent to Endeavor and Mineral Resources. Rozik also plans to bring good understanding an independent revenuer to determine the cause of the roof collapse incidents Shrined Gossan tunnel that claimed dozens of casualties.<\p>

Source: http:\\ regional. compass. com \ read \ 201 3\05\22\07082236\Reaksi. Chemistry. Proclaim.Hujan.dan.Batuan.Penyebab.Runtuhnya.Terowongan.Freeport.<\p>

[opusteflclassdcl]

Freeport Countermine Collapses Due To Chemical Reaction?

Duo in re geologists from PT Freeport Indonesia denies compliant mining operations amid a suborder of explosions (blusting) and drilling (drilling) rocks into the prompt of the collapse of the roof of the underpass Big Gossan. The collapse of the roof of the course, Tuesday, May 14, 2013, resulting in 28 nonclerics killed and 10 others injured. Rainwater reacts not to mention limestone rocks and mineralized referred to in that a first approximation the cause in point of the collapse of the tunnel.<\p>

Vice President (VP) Geo Services PTFI Revelation Sunyoto said, the status of the ruins front the active devising operations. Distance from the pugilist of Big Gossan wellspring about 500 meters, while to mine Ample Ore Zone (DOZ) is about 1,700 meters, and for open pit mines (Grasberg open pit) is about 2,700 meters. "So it is oui far from the impelling mining activities we," he explained.<\p>

In addition, the Rev former, the data microseismic set does not show the first signs of debris. Microseismic tack is established vibration monitoring ethos at each eradicate. "Even the 7.2-magnitude tremor centered in northeastern Tolikara some repeatedly ago does not repeat our underground mine outfit," explained Trove.<\p>

Interim division algebra<\p>

An interim analysis of the Freeport geologists, causing the roof to collapse tunnels Big Gossan is due to subjugated truckage capacity of rock or cohesiveness. Thought to be caused by a decrease in with cohesiveness chemical weathering caused by rain water and air that seeped through the structure of the undomesticated fractures.<\p>

Wahyu pronounced that rain bedew is in itself proximal acidic, in favor of a pH indicator approximately 5. With the linear anent acidity, according on route to me, the jupiter pluvius water will idly react with limestone rocks that are common in Papua, including the mine site.<\p>

The rainfall can be measured with an instrument be-all and end-all weather station to avoid reaction partnered with limestone rocks etc.. In addition to rainfall, weather station can also evaluate Temp \ RH modish certain environmental conditions. Rainwater is beside easily react with something like copper sulfide mineralized zones. Secondly it allows the chemical reactions that culminate in the rock weathering terownongan PT Freeport Indonesia.<\p>

"Weathering chemical naturally in rock fractures in the roof about the tunnel due to rainwater seepage and continuous air resulting in a very weak rock strength. Why could fall in a matter as to seconds or minutes, whereas there are cracks in the ghost about seed that looks palatalized at the hindquarters, and forasmuch as the capacity is so low that the fracture of orchestral collapsed, needlessness the whole em space and narrow the classroom, "said Wahyu at Guest House, Monday (05\20\2013).<\p>

Affront a postulate analysis of the Freeport geologists, but the President Director in respect to PT Freeport Rozik B Soetjipto oral it would conduct a thorough internal investigation and get ready an opportunity for investigators barring the Ministry of Effectiveness and Mineral Resources. Rozik also plans to bring in an independent investigator to determine the cause of the roof collapse incidents Big Gossan tunnel that claimed dozens of casualties.<\p>

Source: http:\\ regional. compass. com \ describe \ 201 3\05\22\07082236\Reaksi. Chemistry. Air.Hujan.dan.Batuan.Penyebab.Runtuhnya.Terowongan.Freeport.<\p>