You discover a trench cave-in has occurred with a worker trapped. The trench is 12 feet deep in unstable soil. What is your immediate priority?
Correct Answer
A) Call 911 and keep all personnel out of the trench
The immediate priority is to call 911 and keep all personnel out of the trench to prevent additional casualties. Rescue operations in unstable trenches require specialized training and equipment.
Why This Is the Correct Answer
Option B is correct because in a trench cave-in emergency, the primary concern is preventing additional casualties. Unstable soil conditions that caused the initial cave-in still exist, making the trench extremely dangerous for anyone to enter. Professional emergency responders have specialized equipment and training for confined space rescues. Keeping all personnel out while calling 911 ensures no additional workers become trapped or injured.
Why the Other Options Are Wrong
Option B: Send your most experienced worker into the trench
Sending any worker, regardless of experience level, into an unstable trench puts that person at extreme risk of becoming another casualty, as experience alone cannot protect against soil collapse.
Option D: Begin digging from the side to reach the worker
Entering the trench immediately would likely result in additional casualties, as the unstable soil conditions that caused the cave-in are still present and could cause further collapse.
Memory Technique
Think 'Don't become victim #2' - your first instinct to help could make you another casualty. Always call professionals first in trench emergencies.
Reference Hint
OSHA Construction Standards 29 CFR 1926 Subpart P - Excavations, specifically emergency rescue procedures and trench safety requirements
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