37
Underwater water blasting and jetting; underwater blasting and clearning; maintenance, repair, and inspection of subsea facilities such as oil and gas drilling and production platform, pipelines, and wellhead assembles; underwater site clerance and debris removal; underwater repair of pipelines, risers, and flowlines; underwater installation of connections for pipelines, risers, and flowlines; installation and maintenance of oil and gas drilling and production, cable guyed platform; installation of concrete oil production, storage, and utility systems; onshore and offshore spill response and hazardous and toxic waste remediation, namely site remediation; emergency spill response containment, collection, and disposal; bioremediation; oil-based mud recorvery; asbestos removal; underwater maintenance, repair and inspection of bridges, docks, piers, and pipelines; maintenance and inspection of hydroelectric and nuclear power plants
39
Salvage diving; Inland diving services for industrial and government customers
40
Underwater welding and burning