Elk Mtn

Ext Collumn: Immediate failure of extended collumn by ski weight Sudden planer, propogation 2m out from ski tip. Isolated collumn burp test: 1 light tap from elbow, sudden planer of top 15cm 3 taps from elbow, resistant planer 30cm from surface Burp test #2: 1st light tap from elbow, sudden planer of top 15cm, partial collapse at 30cm 2nd tap, resistant planer at 30cm