The Best Strategy To Use For Popular Science - Jul 1961 - Page 198 - Google Books ResultUsing advanced climbing and rigging techniques, cut away dead or excess branches from trees or shrubs to maintain right of way for roads, walkways, or energies, or to enhance look, health, and worth of tree. Prune or treat trees or shrubs using handsaws, hand pruners, clippers, and power pruners. Functions off the ground in the tree canopy and might use truck-mounted lifts.National estimates for Tree…See More