Services > Tunneling & Mining Support Services • Management Services • Underwater Construction Services • Flooded Shaft and Tunnel Support Services • Spotlighted Projects and Case Studies Ballard Diving and Salvage (BDS) provides tunnel, shaft, caisson and pipeline construction support services for premier tunneling and mining contractors and joint ventures. BDS has a reputation for managing highly complex tasks in a cost effective and efficient manner. By providing specialty turnkey solutions to contractors requiring hyperbaric equipment and personnel and commercial diving services BDS has become a preferred international provider. Management Services BDS provides specialty Consultancy, Equipment and Personnel to Contractors who operate in compressed air environments. TBM Intervention (provides personnel to support TBM interventions including air and mixed gas CAW’s, medical personnel and qualified Man Lock tenders). Services Include: • Specialty Equipment (Shuttles, Surface Locks, Mixed Gas Life Support Equipment, Robotic Inspection/Radar/Video • Establish Compression / Decompression procedures • Treatment and Management of Decompression Illness • Application of Hyperbaric Oxygen • Mixed Gas Techniques and Procedures • Saturation Techniques and Procedures • Working at Altitude • Construction Under Compressed Air • Advice on Airlock System Design • Audit / Appraisal / Commissioning of TBM Airlock Systems • Environmental Control • Training of Client Personnel • Hazard / Health & Safety Analysis • Emergency / Rescue / Confined Space • Data Analysis • Client Liaison • Occupational Health & Safety Implementation   Dive Medical Technician reviewing decompression schedule Diver Decompressing   Underwater Construction Services We provide specialty consultancy, equipment and personnel to contractors who will be operating in compressed air environments. Services Include: • Rock and Concrete Anchors • Custom Bulkheads • Concrete Placement • Sediment and Debris Removal (Dredging) • Commercial Diving in support of Shaft and Tremie Plug Construction • Mining Ring Installation • Invert and Crown Repairs • Concrete Brick, Steel, and Wood Demolition (Diamond Wire, Mechanical Cutting / Blasting and Hand Breaking) Diver being deployed into brick lined shaft to launch an inspection class ROV into a confined space section of shaft Two divers being deployed into deep shaft to install mining rings Commercial diving to support tunnel repair activities including internal joint repairs, external joint repairs, concrete placement and joint harnessing Flooded Shaft & Tunnel Support Services Underwater Services - Inspection • Manned Underwater Video • Remotely Operated Vehicle Inspections / Video • Long Tunnel Inspections - Extreme Range • Sonar - Tremie Pour Monitoring, Out of Round Survey / Horizontal and Vertical Alignment • Full Three Dimensional Shaft Modeling • Video like Sonar in Zero Visibility • Imaging Sonar Radar (inspection of concrete lining) Specialized Pontoon-ROV for High Flow Tunnel/Shaft Inspections