interacting with in a sequential way.
They look at each one in turn, possibly randomly, but (because they are old") rediscovering, revisiting.
People here go through the lists of questions, looking for ones they can contribute to.
There were one hundred people on the scene. We had to go through them all, interviewing each and every one.
When he passed, he left four filecabinets of files. We had to go through them all to see if any were inportant.