Client: Client Name
Category: Product Development
Date: June 2021
The National Grid project has seen a huge 510-tone machine called Mary, bore 30 metres under the river to connect both of its banks.
The 5km tunnel is to house a replacement gas pipeline, connecting Goxhill in North Lincolnshire to Paull in the East Riding of Yorkshire.
It will carry a vital pipeline which will be able to provide up to 25 per cent Britain’s gas supplies.
Mary, the size of approximately 11 double-decker buses, left Goxhill on the south bank in early 2018 and broke through into a specially constructed shaft at Paull.
During her journey, she has excavated 160,000 tonnes of material – mostly chalk – creating a tunnel more than 3.5 metres in diameter.