More expensive to make
More difficult to make
Uses more expensive and hard to obtain materials to make
Is more dangerous to make and transport
Is a vital war material
Germany had been at war for two years and would have large amounts of experience with what explosives can and cannot do.
And as explained in the TV series leaves body parts in the trees.
But since someone somewhere came up with the explosive idea and made it part of the holocaust story they had to include it since not to include it would be holocaust denial.
Quote from transcript
“Which is why SS Lieutenant Dr. Albert Widmann of the Technical Institute of the Criminal Police travelled into Eastern Europe. Widmann and his colleagues had been involved in the experiments which had led to the use of bottled carbon monoxide to kill the disabled. But he knew that it would be expensive and difficult to send canisters of carbon monoxide all the way to the new killing locations far from Germany. So he had to find a new way forward, which is why he drove into the Soviet Union followed by a truck carrying boxes of high explosive. Widmann reported to Artur Nebe, commander of one of the killing squads, at his headquarters in the Lenin House in Minsk.
Widmann reported to Artur Nebe, commander of one of the killing squads, at his headquarters in the Lenin House in Minsk.
Subtitles: I hope you've got enough explosives with you? You ordered 250 kg, I've brought 450 kg with me. You never know. Very good.
Nazi eyewitness account of murder experiment with explosives: "The bunker had totally collapsed, there was total silence. Body parts were scattered on the ground and hanging in the trees. And the next day we collected the body parts and threw them back into the bunker. Those parts that were too high in the trees were just left there."