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But underwater welding
has been regularly used to repair ships,
oil platforms, and pipelines
for almost 100 years
has been regularly used to repair ships,
oil platforms, and pipelines
for almost 100 years
Full Transcript
00:00:01.000 --> 00:00:04.028
But underwater welding
has been regularly used
00:00:04.031 --> 00:00:09.031
to repair ships,
oil platforms, and pipelines
for almost 100 years.
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Movie Summary
An up-close look at the heroes that keep America's sewer systems running.