Explosions

Hazard rank in the 2021 Clinton County Hazard Mitigation Plan (1 highest priority to 16 lowest priority): 9 (Terrorism) as a result of, or could initiate a 5 Hazardous Materials release, and/or 14 Wildfire.​

Intended: Explosive devices can be carried by cars and people and are easily detonated from remote locations or by suicide bombers. There are steps you can take to prepare.

Unintended:  Dust explosions are a frequent hazard in coal mines, grain elevators, and other industrial environments.  A dust explosion is the rapid combustion of fine particles suspended in the air within an enclosed location. Dust explosions can occur where any dispersed powdered combustible material is present in high-enough concentrations in the atmosphere or other oxidizing gaseous medium, such as pure oxygen. In cases when fuel plays the role of a combustible material, the explosion is known as a fuel-air explosion.

BEFORE an Explosion

Suspicious Packages and Letters

Characteristics of suspicious packages:​

  • Is unexpected or from someone you don't know.

  • Has no return address, one that doesn’t match the postmark or can’t be verified as legitimate.

  • Is marked with phrases like “Personal,” “Confidential,” or “Do not X-ray.”

  • Has inappropriate or unusual labeling such as threatening language.

  • Has protruding wires or aluminum foil, strange odors or stains.

  • Has excessive postage or packaging material, such as masking tape and string.

  • Has an unusual weight given its size or it's lopsided or oddly shaped.

  • Is not addressed to a specific person.

Take these additional steps against possible biological and chemical agents:

  • Never sniff or smell suspicious mail.

  • Place suspicious envelopes or packages in a plastic bag or some other type of container to prevent anything from leakage out.

  • Leave the room and close the door or section off the area to prevent others from entering.

  • Wash your hands with soap and water to prevent spreading any powder to your face.

  • If you are at work, report the incident to your building security official or an available supervisor. They should notify police and other authorities right away.

  • List everyone in the room or area when the suspicious letter or package was recognized. Give a copy of this list to both the local public health authorities and law enforcement officials for follow-up investigations and advice.

  • If you are at home, report the incident to local police.

DURING an Explosion

  • Get under a sturdy table or desk if things are falling around you. When they stop falling, leave quickly, watching for obviously weakened floors and stairways.

  • Do not use elevators.

  • Stay low if there is smoke. Do not stop to retrieve personal possessions or make phone calls.

  • Check for fire and other hazards.

  • Once you are out, do not stand in front of windows, glass doors or other potentially hazardous areas.

  • If you are trapped in debris, use a flashlight, whistle or tap on pipes to signal your location to rescuers.

  • Shout only as a last resort to avoid inhaling dangerous dust.

  • Cover your nose and mouth with anything you have on hand.

AFTER an Explosion

What to expect after an explosion:

  • There may be significant numbers of casualties or damage to buildings and infrastructure.

    • Take care of yourself first and then, if you are able, help the wounded get to safety and provide immediate care. If you are experiencing a medical emergency, call 9-1-1.  Learn how to be the help until help arrives.

  • Heavy law enforcement involvement at the local, state and federal levels.

  • Health and mental health resources may be strained or overwhelmed.
  • Extensive media coverage and strong public fear.

  • Workplaces and schools may be closed and there may be restrictions on travel.

  • You may have to evacuate an area.

  • Clean-up may take many months.

Resources

Explosions and Blast Injuries Primer (PDF).

American Red Cross Terrorism Preparedness (link).

DHS Bomb Threat Checklist (PDF).