Often pruning questions arise and here is a good foundation for the subject.
http://www.chesco.com/~treeman/TPRUNING.html
Real great pictures for the pruning targets.
Then there is a article on DOSE - how much to remove - here
http://www.chesco.com/~treeman/SHIGO/DOSE.html
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Sincerely,
John A. Keslick, Jr.
Tree Biologist
http://www.chesco.com/~treeman
Beware of so-called TREE EXPERTS who do not understand TREE BIOLOGY!