has ability has skill has job zone equipment maintenance monitoring operation and control operation monitoring repairing troubleshooting occupation holder with job zone 2 arm-hand steadiness control precision manual dexterity multilimb coordination reaction time static strength helper--extraction worker helpers--extraction worker 2 Arm-Hand Steadiness Sam Smith Operation Monitoring Reaction Time Multilimb Coordination Static Strength Operation and Control Repairing Troubleshooting Oliver He 47-5081.00 https://www.bls.gov/oes/current/oes475081.htm Helpers--Extraction Workers Control Precision Help extraction craft workers, such as earth drillers, blasters and explosives workers, derrick operators, and mining machine operators, by performing duties requiring less skill. Duties include supplying equipment or cleaning work area. Monitoring Manual Dexterity Equipment Maintenance