HS2 celebrates as first giant London tunnelling machine is switched on
First of two 2,000 tonne TBMs (Tunnel Boring Mac...first professional female astronomer, discovering three new nebulae (haz...hel went on to be first woman to ever discover a comet in 1786. She made s...a football pitch Each has a cutte...
cover tunnel photo by: Matt Brown from London, England / CC BY
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