There never were (and never will be) exact numbers. The estimations are based on a number of factors. The Nazi's own records, witness statements, and survivor stories all played into it.
As far as resources go, they didn't require heavy equipment to dig mass graves, they had slave labor to do that. Give a thousand people shovels and shoot a couple of slow diggers, and you can get a motivated workforce. The weak/starved/sick ones were the first ones in the hole. When they ran out of places to dig, or wood to burn, they just piled them up and left them to rot.
There never were (and never will be) exact numbers. The estimations are based on a number of factors. The Nazi's own records, witness statements, and survivor stories all played into it.
As far as resources go, they didn't require heavy equipment to dig mass graves, they had slave labor to do that. Give a thousand people shovels and shoot a couple of slow diggers, and you can get a motivated workforce. The weak/starved/sick ones were the first ones in the hole. When they ran out of places to dig, or wood to burn, they just piled them up and left them to rot.
That's too depressing to think about. Fuck.