A professional who operates trailer-mounted grapple-loader and chipping machine to reduce logs and logging waste to wood chips. Respnsibilities include:

• Controls loading boom and power-grapple attachment to pick up logs and place them on feed conveyor.
• Adjusts speed and opening of feed rolls according to log diameter, and activates feed rolls that pushes log through chipper unit.
• Monitors gauges and adjusts speed and opening of feed rolls to prevent equipment strain.
• Replaces defective chipping knives, using wrenches and feeler gauges.
• May control opening of debarking spuds (tined rotating drums) that remove bark from log before chipping.