The Art and Science of Practical Rigging Author:Peter S. Donzelli, Sharon J. Lilly The Art and Science of Practical Rigging is an advanced training series that requires the user to have already mastered basic climbibg skills (or aerial lift operation) and cutting techniques. It begins with the basic methods for hardware selection and use, knot tying, and limb removal, and advances to compound rigging techniques and methods for... more » removing heavy wood.« less