That is useful confirmation, especially the consistency of the folding patterns. One point of clarification: when you say expedition mail, do you mean material sent as part of field or expedition contexts, or expedited / bulk mail routed through hubs? In my case the distinction matters because the handling assumptions diverge pretty quickly, especially in light of how the US Postal Operations Manual dictates handling requirements. If you are seeing repeatable damage patterns in one of those contexts, I would be interested in where in the routing chain they tend to appear.
That is useful confirmation, especially the consistency of the folding patterns. One point of clarification: when you say expedition mail, do you mean material sent as part of field or expedition contexts, or expedited / bulk mail routed through hubs? In my case the distinction matters because the handling assumptions diverge pretty quickly, especially in light of how the US Postal Operations Manual dictates handling requirements. If you are seeing repeatable damage patterns in one of those contexts, I would be interested in where in the routing chain they tend to appear.