Welcome to the new Hyperbaric Tunnelling website.
“T.R.H.A Ltd is a specialist hyperbaric tunnelling company established in 1997. We provide expert services related to all hyperbaric techniques associated with modern tunnelling applications, together and in parallel with related Tunnel / TBM; Safety, Medical, Occupational Health, Rescue & Extrication supports.
Please use the navigation panel (Left) to find your way around. Our telephone and email addresses appear at the foot of every page for your convenience.
A.R.Ridley MSc CMIOSH – Managing Director”
Some of our larger projects:-
TBM Repair & Maintenance, Health & Safety Assistance.
Client: Coastal Projects Limited