At UK's Science Museum.
https://collection.sciencemuseumgroup.org.uk/objects/co409423/cutting-pick-from-robbins-markham-tunnel-boring-machine-used-in-channel-tunnel-works-uk-marine-running-tunnel-pick-tool
Cutting pick from Robbins Markham tunnel-boring machine. Used in Channel Tunnel Works (UK marine running tunnel), 1987-1991
https://collection.sciencemuseumgroup.org.uk/objects/co409423/cutting-pick-from-robbins-markham-tunnel-boring-machine-used-in-channel-tunnel-works-uk-marine-running-tunnel-pick-tool
Cutting pick from Robbins Markham tunnel-boring machine. Used in Channel Tunnel Works (UK marine running tunnel) | Science Museum Group Collection
collection.sciencemuseumgroup.org.ukCutting pick from Robbins Markham tunnel-boring machine. Used in Channel Tunnel Works (UK marine running tunnel), 1987-1991