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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 14387971 - Two Employees Killed In Magnesium Dust Explosion

Accident: 14387971 -- Report ID: 0524700 -- Event Date: 01/17/1990
InspectionOpen DateSICEstablishment Name
11029260401/18/19902899Rossborough Manufacturing Co.
At approximately 7:15 p.m. on January 17, 1990, Employees #1 and #2 were working on the third floor of the Reagent Building and mixing the following three compounds: magnesium powder (metallic), calcium carbide, and sodium chloride. Employee #3 was bringing in drums of magnesium powder. Employees #1 and #2 were using a length of steel pipe to loosen a blockage in a magnesium batching hopper. The pipe caused a spark to ignite a magnesium powder flash fire and explosion. Employees #1 and 2 were killed and Employee #3 was injured.
Keywords: work rules, clogged, explosion, flashback, spark, combustible dust, hopper
Employee # Inspection Age Sex Degree Nature Occupation
1 110292604 Fatality Burn/Scald(Heat) Occupation not reported
2 110292604 Fatality Burn/Scald(Heat) Occupation not reported
3 110292604 Hospitalized injury Burn/Scald(Heat) Occupation not reported

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