oblique faultoblique jointobservational wellocean flooroerstedoleic acidonline analysisooliteoozeopen circuitopen networkopen pitopen pit miningopen pittingopen shieldopen space filling textureopen stopopeningoperating factoroperating loadoperating pointophioliteoptimum mesh of grindoptimum timeordinary fan cutoreore bearing fluidore binore blendingore blockore bodyore body zonationore depositore dressingore microscopyore mineralore passore preparationore processingore reserveore shootorganic efficiencyorganic sulfurorientational surveyoriented coreorogenic beltorogenic phaseorogenyorthomagmatic depositsoutput