Poor Test Results on Mt Blackmore

Went for a ski in the Mt Blackmore area this am. Temps were cold in drainages, but surprisingly warm in the sun. The objective for the day was to ski the mellow ramp spilling East off of the North ridge of Mt Blackmore. The East face of Blackmore had clearly seen significant wind. We stopped to dig a pit in the shelter of a terrain feature before ascending further. Our result of ECTP 3 at 135cm (total snow depth of 160cm) was a red flag, and turned us around quickly. The ECT failed underneath a 5cm thick knife hard Wind Slab on a fist hard layer of mixed grains containing 0.1mm FC and 1.0-2.0mm GP.