"Built to Last: Successful Habits of Visionary Companies" is a unique book that I read many years ago. I can't remember if my admiration for 3M started before, or after, the book entered my world. Creativity, & Creative Thinking are important elements in my Business Theory. I didn't discover anything. It just that I found that many people, sort of, refuses to accept Creativity, as basic essential fundamental vital, and often crucial for most businesses success.

William L. McKnight Management Principles Created 3M's Corporate Culture:
"As our business grows, it becomes increasingly necessary to delegate responsibility and to encourage men and women to exercise their initiative. This requires considerable tolerance. Those men and women, to whom we delegate authority and responsibility, if they are good people, are going to want to do their jobs in their own way.

"Mistakes will be made. But if a person is essentially right, the mistakes he or she makes are not as serious in the long run as the mistakes management will make if it undertakes to tell those in authority exactly how they must do their jobs.

"Management that is destructively critical when mistakes are made kills initiative. And it's essential that we have many people with initiative if we are to continue to grow."

In the following great link, from Amazon.com, you can read few pages of the above mentioned book: Built to Last

Another company I like, with knowing too much about its structure is:
I hold their Stock. Here is the company profile (in hebrew)