Time Magazine, March 18, 1985:
'How had he [Wiesel] survived two of the most notorious killing fields [Auschwitz and Buchenwald] of the century? "I will never know" he says. "I was always weak. I never ate. The slightest wind would turn me over. In Buchenwald they sent 10,000 to their deaths every day. I was always in the last hundred near the gate. They stopped. Why?"
Compare this with Encyclopedia Britannica (1993), under 'Buchenwald':
"In World War II it held about 20,000 prisoners.. .