0:0 to 0:38 - Clean Pass
0:38 to 1:23 - Even heat (Blow Torch) over the track.
1:23 to 2:00 - More heat (Blow Torch) Some grooves melted away, and significantly warped portions of the vinyl.
2:01 to end - Blow torched to try flattening the Vinyl again.

Tchai Gradual Degradation

0.00 to 0.24 - Clean Recording
0.24 to 1.04 - Even sandpapered across the track
1.04 to End - Tape fix to reduce 'locked groove'

JFK Gradual Degradation

0:00 to 0:30 - Clean Pass
0:30 to 1:01 - Sandpapered
1:01 to 1:55 - Heat/burned with Lighter
1: 56 to 2:18 - Tape and ashes
2:19 to 2:33 - Nailed through. Holes
2:34 to 3:04 - Nailed through - Side B
3:05 to 3:51 - Nailed in specific pattern across the radius
3:52 to 4:27 - Knife 'Cross-hashing' across the vinyl.
4:28 to 4:51 - More Knife Scratches
4:52 to 5:20 - Widening of centre hole.
5:21 to 5:40 - Even Blowtorch across the vinyl
5:40 to End - 'Focused' Blowtorch on the either sides of the Vinyl.

GSlim