Staffordshire Fire and Rescue Service went to an incident at Queen’s Hospital and Hobbycraft, Burton-on-Trent yesterday.
Two fire engines from Longton and one from Burton attended, after four Hobbycraft employees went to the hospital's A&E department after coming into contact with the substance.
The powder was later identified as Napthalene, which is a low risk product, and used to fumigate products shipped from abroad.
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"It's the kind of verbal abuse you have to put up with now and again working at the weekend in the ambulance service."
It'll be another chilly day with patchy cloud and sunny spells. It will stay dry.
Some isolated wintry showers is possible over the Peak District.