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Figure 9: Long Operation – Regional geology, tenure, nickel shoots and targets
Long Operation Seismicity
Mining-induced and regional seismicity is an inherent risk at the Long Operation. The Long Operation ore bodies are, to a
varying degree, disrupted by a swarm of cross-cutting porphyries, some of which are stressed. When mining the discrete ore
blocks within the Long Operation, procedures to manage these conditions are built into the operating standards and are well
understood by our mining team.
To ensure continued safety of our people, as well as regulatory compliance, IGO undertakes regular internal audits on its
geotechnical systems and ground control practices. In addition, geotechnical professionals are also utilised to undertake external
independent geotechnical audits. This constant feedback forms part of our continued focus on safety as well as ensuring
regulatory compliance.