🚒 Fireground Thursday
Prepared by the LSE Editorial Team. Reviewed by Joseph Andrade, Jr., RN, NRP.
Joseph works across emergency response, healthcare, and workplace safety and develops practical training for civilians, employers, and first responders.
The dispatch reports a worker trapped in a trench. On arrival, coworkers point toward the excavation. A ladder is nearby, heavy equipment is running, and several people are gathering at the edge. Someone says they can still see the victim.
The urgency is real. So is the possibility of another collapse. Before anyone goes below grade, the first-arriving company has to gain control of the scene and request the resources needed for a technical rescue.
🛑 Begin with scene control
The excavation may still be changing when responders arrive. Soil can continue to move, equipment can add vibration or load, water can enter, and utilities may be damaged. Coworkers who want to help may be preparing to climb in.
Establish command, control access and stop spontaneous entry. Move unnecessary people away from the hazard area through routes that do not expose them to unstable ground. Request the technical-rescue resources identified in department procedures early.
Identify how many people may be involved and where they were last seen. A witness who knows the work area can help command understand the site while crews establish control.
Immediate actions should stay within the arriving crew’s training. The presence of a ladder does not establish that the excavation is safe to enter.
⚠️ Expect the possibility of a second collapse
An initial failure does not stabilize the remaining walls. It can change the support and loading of nearby soil. Rescue activity, weather, water and equipment movement can further affect conditions.
The technical team needs to assess the excavation and develop a protective approach appropriate to the site. Depth, geometry, soil, nearby structures and utilities all matter.
Awareness-level or operations-level training does not authorize a crew to improvise technician-level entry. Officers should know their department’s capabilities and the limits of the personnel and equipment arriving with them.
Make those limits part of ordinary training. They are harder to discuss clearly when a distressed coworker is demanding immediate entry.
🚧 Keep the edge and access routes under control
People tend to move closer to see the victim. At an excavation, that movement can add load and expose more people to unstable ground.
Set hazard zones through the incident’s assessment and procedures. Keep personnel, equipment and bystanders out of areas that have not been determined safe. Do not rely on a generic distance from an article as a substitute for the team’s evaluation.
Apparatus placement deserves the same attention. Consider ground conditions, the excavation footprint, access for specialized vehicles and room for the operation to expand. Parking close can create both a loading problem and an access problem.
Assign someone to maintain the perimeter. Tape alone may not stop a coworker who believes they can reach the victim.
🚜 Control equipment with an understanding of what it does
Construction sites may have excavators, generators, pumps, trucks and other machinery operating when responders arrive. Command needs to establish what can move, what is creating vibration and what systems may be supporting site safety.
Coordinate shutdown or isolation with qualified site personnel and the rescue team. Blindly switching off every system can introduce a different hazard. A pump may be controlling water, for example.
Identify utility services and request the appropriate utility resources. A site representative can provide plans and operating information, but command should not assume that a worker’s familiarity with the excavation establishes its safety after failure.
🌫️ Consider atmospheric hazards
An open top does not guarantee a safe atmosphere. Depending on the work and surroundings, an excavation can involve leaking utilities, sewer connections, contaminated soil, engine exhaust or other sources of hazardous conditions.
The rescue team’s hazard assessment, procedures and monitoring plan should address those possibilities. Monitoring equipment needs to be used by trained personnel who understand what it measures and what it does not.
Information from the site can help: What utilities are present? What work was underway? Were there unusual odors, damaged lines or connected underground spaces? Record and pass that information to the technical team without sending unprotected personnel in to investigate.
🚑 Develop the medical plan alongside the rescue plan
A trapped person may have traumatic injury, respiratory compromise, hemorrhage, hypothermia or crush-related problems. Medical urgency needs to be communicated early so rescue and EMS can plan together.
Determine where medical personnel can safely work and whether contact with the patient is possible without hazardous entry. Obtain the reported time of entrapment, last known position and any available information about the parts of the body involved.
Prepare appropriate medical and transport resources under local protocols and medical direction. Treatment considerations around prolonged entrapment and release require qualified clinical planning; they should not be improvised from a general article.
Plan the handoff before extrication. Where will the patient go once freed? Can the transport crew reach that location? Who will receive the clinical update? Keep the access route usable as additional rescue equipment arrives.
🗣️ Use coworkers as witnesses
Someone who was working nearby may know details responders cannot see. Separate information gathering from the impulse to attempt rescue.
- Who is missing, and where were they last seen?
- What work was being performed?
- What was the reported depth and layout before the collapse?
- Was a protective system installed?
- Were utilities exposed or damaged?
- Was water present, and had the soil moved earlier?
- What equipment was operating nearby?
- Could anyone else be in the excavation or connected work area?
Document uncertainty. “A coworker reports one person” is different from a completed accountability check. Pass both the information and its source to command.
⏳ Explain why preparations take time
From outside the perimeter, technical-rescue preparations can look like inactivity. Crews may be assessing soil, moving panels and shoring, establishing access, managing utilities and organizing medical support.
Those steps control hazards that could injure the victim and rescuers. Where appropriate, a designated person can explain the work to coworkers and family members so they understand why immediate entry is not occurring.
If communication with the victim is possible from a safe position, maintain it within the rescue plan. Avoid promises about timing or outcome that the team cannot support.
🎓 Train the first ten minutes without entry
A department can run a useful trench incident drill without sending anyone below grade. Make the objective the first-arriving company’s decisions before the technical team is ready.
Use a tabletop, photographs or a controlled training area. Give the company a dispatch report, a site layout and several witness statements. Assign one instructor to introduce realistic information as the exercise develops.
The crew should establish command, identify the likely hazard area, prevent spontaneous entry, gather victim information and request resources. It should also choose apparatus positions and prepare a concise handoff to the technical team.
Evaluate specific actions:
| Drill check | Evaluator question |
|---|---|
| Resources | Was technical rescue requested promptly through the correct process? |
| Access | Did someone take responsibility for access control? |
| Hazards | Were utilities, water and operating equipment identified? |
| Information | Was victim information separated from unconfirmed assumptions? |
| Staging | Did staging leave room for specialized resources? |
| EMS | Was EMS included in planning before extrication? |
Debrief what the crew could control and what required additional expertise. Then repeat the opening with one change, such as an additional missing worker or an access road blocked by equipment.
📞 Know how the rescue team is requested
“Call technical rescue” is not enough if nobody has verified the dispatch process. Review the request procedure, mutual-aid arrangements and resource information through normal department planning.
Consider who provides specialized equipment, who supplies additional personnel and how command will communicate with incoming teams. Those arrangements should be established before an incident, rather than negotiated over an unstable excavation.
Exercises can reveal practical gaps: an outdated contact, an unclear request category or a staging location that cannot accommodate the needed apparatus. Assign those issues for follow-up instead of leaving them as observations in the debrief.
🏗️ Understand the prevention failures you may inherit
Excavation safety standards address protective systems, inspections, water, access, adjacent structures, falling material and atmospheric hazards. Knowing those concepts helps a firefighter recognize concerns without assuming the employer’s competent-person role.
In an October 2026 announcement, OSHA alleged serious excavation hazards at the Monroe Commons project in New York, including a steep, unstable embankment nearly 75 feet high. The agency cited multiple employers. Citations and proposed penalties remain subject to the enforcement process.
That case concerns employer prevention. The responder question is what to do when prevention has failed or conditions are uncertain. The arrival of emergency personnel does not remove the need to assess and control the ground hazard.
Our excavation prevention and trench-collapse case study discusses the employer side. Keep that discussion distinct from qualifications and procedures for rescue entry.
🎯 Prepare the first crew for its actual job
The first company can make a substantial contribution before entry: establish command, control access, gather reliable information, request the right resources and make room for the technical operation.
Train those actions with the same attention given to equipment skills. At the next drill, ask the crew to show how it would prevent a second victim while preparing to help the first.
Related reading includes the first minutes of a toxic-gas response. For related course options, review confined-space training; confined-space and trench-rescue qualifications are distinct and must match the assigned work.
✅ Key Takeaways
- Establish command, control access and stop spontaneous entry before anyone goes below grade.
- An initial collapse does not stabilize the remaining walls. Expect a second collapse.
- Awareness-level or operations-level training does not authorize improvised technician-level entry.
- Coordinate equipment shutdown with qualified site personnel, since a pump may be controlling water.
- Build the medical plan with the rescue plan, and use coworkers as witnesses, not rescuers.
- Train the first ten minutes without entry, and verify how technical rescue is actually requested.
❓ Frequently Asked Questions
Can the first-arriving crew enter the trench if they can see the victim?
Immediate actions should stay within the arriving crew’s training. Awareness-level or operations-level training does not authorize a crew to improvise technician-level entry, and the presence of a ladder does not establish that the excavation is safe to enter.
Should we shut off all equipment on arrival?
Coordinate shutdown or isolation with qualified site personnel and the rescue team. Blindly switching off every system can introduce a different hazard.
How can a department train trench response without entry?
Use a tabletop, photographs or a controlled training area with a dispatch report, site layout and witness statements. Evaluate command, access control, hazard identification, resource requests, staging and EMS planning.
Training You Can Count On. When Seconds Count.
Bring the Lesson Into Your Next Training Session
Find training for your role, workplace or response team.
📚 Authoritative Sources
Hero: AI-generated educational illustration, not an incident photograph. Tobyhanna Army Depot firefighters in a 2017 trench-rescue exercise. James Lentz / U.S. Army, public domain. Training photograph, not the Monroe or Pennsylvania fatality scene. No government endorsement implied. Original photograph and reuse terms.
