Maintain visible field presence across active backfill headings, barricades, bulkheads, pour sites, batch or transfer points, pump and pipeline routes, construction projects, excavations, and fabrication areas while verifying workplace examinations, pre-operational inspections, ground conditions, ventilation, access, and housekeeping. Verify controls for pressurized backfill and grout systems, line charging and flushing, stored energy, line-of-fire exposure, blocked or failed pipelines, barricade integrity, concrete placement, shotcrete rebound and exposure, welding and cutting, mobile-equipment interaction, suspended loads, and work near open holes or brows.