Long-life screwbolts developed for Crossrail 10 Feb 2019 UK: The bespoke corrosion-resistant PLUS bolt was developed by screwbolt specialist Excalibur to meet the demanding requirements of the Crossrail project in London. Crossrail Ltd requires anchors used in the tunnel lining to demonstrate a 120-year design life instead of the standard 50-year span of a standard…