Occasionally (up to 1/3 of the workday): Kneeling or crouching during inspections and troubleshooting; pushing or pulling light equipment and sampling devices; reaching above or below shoulder level; riding in heavy equipment; entering and exiting equipment using three-point contact; working at elevations or on elevated platforms; bending and stooping; lifting up to approximately 30-40 pounds; carrying PPE, survey equipment, laptops, tools, or sampling gear; climbing stairs, ladders, and equipment access points; and standing during meetings, inspections, and site observations. Constantly (2/3 or more of the workday): Using fine motor skills for computers, engineering software, GPS, and survey equipment; visual observation for hazard recognition, surveying, and interpretation of plans and screens; hearing radio communications, alarms, and heavy equipment; communicating with operators, supervisors, engineers, and contractors; maintaining depth perception around haul roads, highwalls, and other mine features; and maintaining situational awareness in an MSHA-regulated environment.