igneous rocksigniterigniter cordilluminationimmediate roofimmediate strainimpact crusherimpact grindingimpact millimpedance factorimpedance of explosiveimpedance of rockimpellerimpeller clearanceimperfection coefficientimportant anomalyin situin situ leachingin situ stressinclineinclinometerincomeincreasing stripping ratioincremental stripping ratioindependently rotated drillindicated mineral resourcesindicator elementindicator elementsindicator mineralindicator mineralsindicator plantindicator ratioindifferent ionindividual mineralsinduced polarization methodinduced roll separatorinduced stressinduction logging methodindustrial minerals and rocksinferred mineral resourcesinformal supportinfrastructureinhomogeneityinhomogenous deformationinjectorinlet pressureinsert drill steelinsetinstant electric detonatorinstrumental analysis