The only man in history who did a forensic investigation of the alleged gas chambers was Fred Leuchter. He is the only man in history who was approved by both Canadian and German courts as a valid gas chamber expert, with authority to testify in court on the subject of Nazi gas chambers.
This was the report he created at the conclusion of his investigation:
https://www.bitchute.com/video/MXZtzeasp7ZD/
Recent interview:
The only man in history who did a forensic investigation of the alleged gas chambers was Fred Leuchter. He is the only man in history who was approved by both Canadian and German courts as a valid gas chamber expert, with authority to testify in court on the subject of Nazi gas chambers.
This was the report he created at the conclusion of his investigation: