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A GROUP of Channel Tunnel Rail Link workers were taken to hospital after inhaling fumes from a sealant used to waterproof a tunnel.
The 14 people had been working at a CTRL site in Swanscombe.
Emergency teams said the workers went to Darent Valley Hospital, where they were treated and released.
A CTRL spokesman said a group of workers had inhaled fumes from a substance another group were applying to the tunnel.
He said the substance was not toxic or harmful.
A spokesman for Kent Fire and Rescue said crews attended the incident but were not required.
Ambulance teams were also called just after 12.50pm on Saturday.