I just looked through a bunch of milling questions and there is one that stands out.
While technically speaking the milling in his question is the right tag in his question, it refers to milling in machining (wikipedia).
As this SE is about woodworking i'd define the milling as "The process of cutting trunks or part of them into rough-cut lumber. Techniques, tools safety concerns, ...".
I'm going to remove this tag from the question and add a link to that discussion. The edit has to be approved by the community anyways, so if I'm wrong, no harm done. :) I'd love to hear what you think on this.