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Previous by Date: Subject: [DCHAS-L] 57 students treated after school science accident Date: Thursday, August 28, 2014 8:35:23 AM Author: Ralph B. Stuart <ralph.stuart**At_Symbol_Here**CORNELL.EDU>

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This appears to be a version of "The Works Bomb". Essentially a 2 L PET
soda bottle with 6 or so balls of aluminum foil and either acid (Works
Toilet Cleaner, 25% HCl) or Draino (NaOH and Al). After capping the bottle
and shaking once, the bottle will expand and burst in about 90 seconds. Our
experiments with it showed corrosive debris randomly scattered out to about
7 meters. The sound level at 3 meters was around 120 dB.

These devices are considered IED's in California, and other states, and
making one is a felony.

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ACSafety has a new address:
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-----Original Message-----
From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**MED.CORNELL.EDU] On Behalf Of
Ralph B. Stuart
Sent: Thursday, August 28, 2014 5:35 AM
To: DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU
Subject: [DCHAS-L] 57 students treated after school science accident

http://www.couriermail.com.au/news/queensland/students-hurt-as-science-proje
cts-explodes-at-st-johns-roma-school/story-fnihsrf2-1227039173264

I guess the rainbox experiment is not the only "cool science" that can go
awry. This is from Australia...

- Ralph

57 students treated after school science accident

UPDATE 3.30PM: THE number of people hospitalised after a caustic soda
accident at St John's Catholic school has risen to 37.

Thirty-five of the people hospitalised have been children, and a total of 50
people were exposed to the caustic soda.

Sources have confirmed the chemical accident occurred when a class science
experiment went wrong about 12pm this afternoon.

Chemicals were mixed in a plastic coke bottle before it expanded and
shattered, exposing the children to the sodium hydroxide.

Sources have also said there will be a full investigations into the
accident.

LATEST: All students except one that were involved in a caustic soda
accident this afternoon have been released from the Roma Hospital's Accident
and Emergency room.

St John's Catholic School has confirmed 37 children in Years' 1 and 2 were
taken to Roma Hospital shortly after 12pm.

Eighteen children were taken by ambulance with the remainder taken by their
families - in total 57 students and four teachers have been treated either
at the scene or at Accident and Emergency.

Immediate first aid was provided and emergency services were called to the
school.

Director Diocese of Toowoomba Catholic Education John Borserio said student
safety was paramount.

"The safety of children in our schools and our staff is our number one
priority," he said.

St John's School Roma principal Nicholas Lynch has been in contact with
families of the school students.

Members of the Catholic Education Office are travelling to Roma to provide
support to the school community."

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