Pattern Spread - SURALCO LLC
This study showed pattern spread of 25% for similar fragmentation to reduce drilling cost. Also, fly rock and noise control opened mine reserves previously closed due to community concerns.
Summary of Report
It was concluded that even with a pattern expansion of 1 meter extra burden, the fragmentation provided was more than sufficient, meaning a pattern expansion is justified using the Varistems which will result in more minable ore with the same amount of meters drilled. The biggest gain that can be achieved with the Varistem is the gains in reserve where previously blasting of the ore was deemed impossible due to community issues. |
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Pattern Spread Study #2
Patent # 5,936,187
