Gas pressure behind the pig pushes it down the line to the first receiver site about 60 miles downstream. Liquids or foreign material inside the pipeline are pushed ahead of the pig and into a receiving tank at the site. In addition to removing liquids and debris, the pig cleans the interior pipe wall and improves the pipeline's efficiency. Communications System Northern Border maintains a microwave network as an important part of its communications system. The towers are also used to operate a two-way radio system used by employees.
Group presentations are available.
For more information, contact Public Affairs.