Release of asbestos dust and fibres took place during work to remove industrial boilers, associated fixed pipework and a boiler house at a redundant manufacturing site. The dangerous material then remained exposed until a clean-up operation commenced two days later.
Prosecution of the owners of the derelict manufacturing site and the contractor resulted in fines for safety failings and breach of long-standing asbestos laws.
Here is the Press Release of Britain’s Health and Safety Executive (taking the enforcement action).
Update: here is the same offence at another derelict factory (this time it is removal of kiln carts from a disused pottery).