Tyson Foods Inc. (TSN) recently required conversion work on their production facility in Noel, Mo. Although the roof was to be sealed with bitumen sheeting, the building owner specified that no welding was to be performed with an open flame on the roof. A specifica- tion the roofing company, Harness Roofing, could easily abide by using the BITUMAT B2 from Leister. Open flame entails risks Globally, flat roofs have a diverse set of roof sealing sy

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