PLATINUM GROUP METALS LTD

Figure 16-60: Longitudinal Stope Sequencing Rules - Longitudinal View

16.3.11 Delineation Diamond Drilling

Mineral resource definition drilling will be completed from both surface and underground. The main objective of the mineral resource definition drilling is to upgrade Indicated mineral resources to Measured mineral resources. Such infill surface mineral resource definition will be undertaken in initial years until the mine is established to allow access for underground mineral resource definition drilling well in advance of stoping. Capital provision is made for infill mineral resource definition drilling to depths of approximately 700 m below surface.

In each Complex there will be underground diamond drilling programs to upgrade the mineral resource and continuously delineate all stopes for mine planning and grade control. The delineation diamond drilling will be completed from drill cutouts spaced along the FW drifts on sublevels and from other pre-developed excavations, including remuck bays in the declines. Sufficient mine development will be scheduled and in place ahead of the advancing production fronts to ensure adequate time for definition diamond drilling and subsequent mineral resource model updates and mine planning. Diamond drilling will be completed from the service decline and FW drift to define the placement of sublevel infrastructure and stope sills.

This drilling is demonstrated on 460 Level in the Central Complex in Figure 16-61.

Waterberg Technical Report