Back in his day, he says, he was lucky to have a pair of safety glasses. “I wore regular glasses, so I’d just have those on,” he says. “I wore cotton gloves and used a 2-foot torch, and that was about ...

If the sheet piling needs to be dismantled, divers have to cut the walls into smaller pieces using a cutting torch. Normally, a diver can cut about 20 meters a day, which corresponds to a speed of ...