The second casualty is preventable

During a fictional maintenance incident, a worker collapses inside a restricted space. An untrained colleague prepares to enter because a portable mask is available, but no one has established the atmosphere or a suitable rescue system. Another employee has called the site’s emergency contact and is keeping bystanders away. A manager asks staff to wait for a final medical outcome before reporting, and a supervisor describes the likely cause as carelessness before examining records. The exercise concerns preventing further exposure, prompt truthful communication and evidence-based learning. It gives no medical treatment recipe, entry authorization or complete statutory reporting timetable for every industrial sector and local circumstance.