Technical gas being pumped though the Nord Stream pipeline has reached the German city of Lubmin, Nord Stream spokesman Steffen Ebert said.
The technical gas is necessary to push nitrogen out of the pipeline and achieve a certain level of pressure. The technical gas was "launched" in the Russian city of Vyborg on September 6 by Russian Prime Minister Vladimir Putin.
Putin pushed an on-screen button which started up the machinery that began pumping the gas into the pipe.
Ebert said it would take about a month to reach the pressure needed for continual gas supplies. The pipeline is scheduled to begin operating fully in November 2011.
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