HSE Links Health & Safety executive useful web links... COSHH Approved Code of Practice ACOP L5 sixth edition http://www.hse.gov.uk/pubns/priced/l5.pdf HSG 258 Controlling airborne contaminants at work http://www.hse.gov.uk/pUbns/priced/hsg258.pdf HSG 187 Control of diesel engine exhaust emissions in the workplace http://www.hse.gov.uk/pubns/priced/hsg187.pdf