“...In the canton Vivar Pucara site access tunnel roundhouse PH is built. MN - SF, the rock mass has...”
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“... assessment of rock mass, which allows to improve the security, viability and economics in the work...”
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“... class obtained with Rock Fosforica+ecobonaza was similar statistically that the farming witness...”
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“... with phosphoric rock, in those that it was obtained the smallest weight or biomass....”
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“... and / or rocks .      Sarayunga is located in an area where it is common to the landslide by excessive rainfall...”
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