P-9 Project
... that P-9 Project was the codename for the Manhattan Project's effort to produce heavy water for nuclear reactors?
... that <b id="mwCLE"><a href="./P-9_Project" id="mwCLI" rel="mw:WikiLink" title="P-9 Project">P-9 Project</a></b> was the codename for the <a href="./Manhattan_Project" id="mwCLM" rel="mw:WikiLink" title="Manhattan Project">Manhattan Project</a>'s effort to produce <a href="./Heavy_water" id="mwCLQ" rel="mw:WikiLink" title="Heavy water">heavy water</a> for nuclear reactors?