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Thursday, 28 July 2016 | 17:26
Weak La Nina Seen This Year A La Nina event may develop in the third quarter of the year but it is likely to be weak and far less intense that the El Nino event that ended in May
Thursday, 28 July 2016 | 17:16
Sumitomo Bank Lends US$63.5mn to Pupuk Indonesia Energi Pupuk Indonesia Energy (PIE), a subsidiary of state-owned Pupuk Indonesia, has received a US $63.5 million loan from Bank Sumitomo Mitsui Indonesia.
Analyst: Big Gossan Collapse should have been 'Predicted'  
A man points on a map, the site of an accident at the Freeport Indonesia mine. The Indonesian unit of Freeport-McMoRan Copper & Gold Inc suspended operations at the world's second-largest copper mine on Wednesday. REUTERS/Beawiharta
Monday, 27 May, 2013 | 06:19 WIB
Analyst: Big Gossan Collapse should have been 'Predicted'  

TEMPO.CO, Jakarta - Dwiyanto Joko Suprapto, a geomethanics expert from Diponegoro University, said that the Big Gossan tunnel collapse is something that should have been known in advance. He argued that any underground tunnel or mine has a stand-up time or an operational life.

"So, since the initial planning, the team should already know how old of an underground tunnel or mine is," Dwi told Tempo, Sunday, May 26.

He said cracks are a natural occurrence that can be monitored using an extensometer, a device that detects and measures ground movement and shifting. "It is used to provide early warnings of avalanches or collapse," he said.

President and CEO of Freeport-McMoRan Copper & Gold Inc., Richard C. Adkerson, said that the Big Gossan collapse occurred suddenly. He said that he had never calculated the probability of the disaster.

Nevertheless, he claimed that the underground training facility had high security and safety standards. According to Adkerson, in its 30 year of conducting mining operations, this kind of incident never happened before.

"We never expected this could happen after looking at the track record of our safety standards--which is the best compared to other mines," Richard said in a press briefing last Thursday.

 

AYU PRIMA SANDI

 



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