The tell-tale signs of glyphosate use in around the Gig Mill Primary School grounds in Norton CONCERNS have been raised about Dudley Council s continued use of a controversial weedkiller linked to cancer - especially in and around school grounds. Environmental campaigner Mark Binnersley has written to the local authority, Gig Mill Primary School and Stourbridge MP Suzanne Webb to air concerns about the use of glyphosate based weedkiller, described as likely carcinogenic , after noticing scorch marks on grassy areas on The Broadway and in the school grounds. Burnt edges along The Broadway The burnt patches are a tell-tale sign of use of glyphosate based products such as Roundup, produced by Monsanto, which has been blamed for causing cancer in a series of US court hearings.