The Germans then moved missile production and testing into the secure, deep tunnel network built beneath the Harz mountains at Mittelwerk.
Busta entered a plea of not guilty to the charges that he had mistreated and murdered prisoners during his time at Mittelwerk.
Following the June 1945 Fedden Mission investigation of the Dora conditions, Möser was among 19 defendants tried by the American General Military Government Court in the Dora Trial (The United States of America versus Arthur Kurt Andrae et al., Case Number 000-50-37), part of the Dachau Trials.