Spark northwest extension Three holes were completed in the Spark northwest extension at the beginning of the Phase XIII drill program in March. Then the drill was moved over to the Bolt pegmatite for 15 boreholes, before a final borehole was completed in the Northwest extension in July. The news release divulged that all nw extension holes encountered pegmatite, but otherwise was tight-lipped about these and assays were not released. The unusual depth of the final hole (550 m) hints they have a target at depth.