[3] Under his leadership, Chrysler became second among the world's largest auto producers, with sales exceeding $1 billion in 1947.
"[4] Under his leadership Chrysler got a contract from the US government for isolating Uranium 235, and he was a key figure in proposing a nickel plated device for this process that would allow replacement of much of the nickel with less expensive steel.
Truman also appointed Keller to serve as the director of the Office of Guided Missiles.
[6] In 1954, he was one of ten outstanding scientists and industrialists appointed to the newly formed Army Scientific Advisory Panel.
In 1946, President Truman awarded him the Medal for Merit for his contribution during World War II.