Supervise others engaged in tree trimming work and train lower-level employees. Operate boom trucks, loaders, stump chippers, brush chippers, tractors, power saws, trucks, sprayers, and other equipment and tools. Climb trees, using climbing hooks and belts, or climb ladders to gain access to work areas. Clean, sharpen, and lubricate tools and equipment. Cut away dead and excess branches from trees, or clear branches around power lines, using climbing equipment or buckets of extended truck booms, or chainsaws, hooks, handsaws, shears, and clippers. Trim, top, and reshape trees to achieve attractive shapes or to remove low-hanging branches. Prune, cut down, fertilize, and spray trees as directed by tree surgeons. Hoist tools and equipment to tree trimmers, and lower branches with ropes or block and tackle. Operate shredding and chipping equipment, and feed limbs and brush into the machines. Load debris and refuse onto trucks and haul it away for disposal. Inspect trees to determine if they have diseases or pest problems. Cable, brace, tie, bolt, stake, and guy trees and branches to provide support. Collect debris and refuse from tree trimming and removal operations into piles, using shovels, rakes or other tools. Provide information to the public regarding trees, such as advice on tree care. Clear sites, streets, and grounds of woody and herbaceous materials, such as tree stumps and fallen trees and limbs. Remove broken limbs from wires, using hooked extension poles. Trim jagged stumps, using saws or pruning shears. Transplant and remove trees and shrubs, and prepare trees for moving.