Health and Safety

Hi I was wondering if anybody has come across an allergic reaction to a powder. My friend works for a company that did not provide him with any protective overalls, My friend tells me that whilst sparying the tempture was very very hot in the powder coating booth as the ovens run along the side of him plus the weather outside was very hot. My friend believes that his skin pores opened up and powder entered his skin and when he cooled down his pores closed up trapping the powder in his skin he tells me he sprayed for 9 hrs a day for 7 days. He now has a really bad rash on the back of his right leg and right arm as he is left handed so he spays pointing the gun to the right he also tells me that due to large items needing to be coated he has to stand inside the spary booth and was wearing shorts.