A massive fire has erupted at an industrial estate with six people taken to hospital and residents told to "stay indoors" as thick black smoke fills the sky. Firefighters are battling the huge blaze at Blairlinn Industrial Estate in Cumbernauld, North Lanarkshire . Two fire service appliances first rushed to the scene at around 2.35pm and on arrival firefighters found one single storey building well alight. A further four appliances then raced to the industrial estate as well to help tackle the