Well guys, in general, a DARK line on film is not a scratch, it is something else, usually a pressure line or a chemical mark. A LIGHT line is a scratch!
So, my diagnosis is that this is not a scratch by something removing emulsion from the negative.
However, the line on the left does have dark outriders. But then again it has light outriders. This is very unusual. I would suggest something has caused pressure sensitization and has also scratched the film enough to cause dark and light marks. This may have happened most anywhere.
I have also noticed what appears to be a regular micro reticulation pattern in the enlarged image. Does anyone else have any comments on this or the comment about scratches?
BTW, it is hard to say if this could be caused by EK. Sometimes film groups come in-line and sometimes side-by-side. If it was in-line, then all packages in a group would have the scratch, but if it was side-by-side, then each roll would have avoided the problem except those in-line in the next group.
PE