The experiments the Germans did on humans lacked scientific rigor, were rarely if ever done with control groups and mostly without sound hypothetises behind them. Thus most of it is unusable.

As far as I know, the only usable data from the unethical German human experiments were those based around hypothermia, where they found that the blood veins in the neck that run close to the skin cause more cooling of the body temperature if cold than other body parts, leading to the introduction of collared life wests to make sure the neck was out of the water even if the person wearing the life west was unconcious.

As for the economy, Hitler did not pull Germany out of the depression - better economical times did.

I'll quote an old post of mine on the subject.

Note that all figures are in 1938 dollars.

How did Germany afford its re-armament?

By economic tricks and inflationary spending, then plunder.

Note that the hyperinflation ended in August 1924, much though the effort of the then President of the Reichsbank, Hjalmar von Schacht. Also, Chancellors Brüning and von Papen had negotiated an end to all war reparations in late 1932 (at the Lausanne conference), before the nazis took power. Only the military restrictions remained of the Versailles treaty.

Hjalmar Schacht, the Chairman of the German Central bank introduced the MEFO, a currency with which the state could pay companies for contracts and deliveries, that could only be used to pay taxes and fees to the state. Thus the Germans could in essence print a lot of money without it entering circulation and creating inflation.

Still, the reichsmark was in theory pegged to gold, but no exchange to gold was possible, and the value was set so high that no-one outside Germany accepted it, forcing the Germans to pay for vital imports - such as iron ore, led and copper from Sweden, tungsten from Spain and Portugal, oil from Romania, nickel from Finland, chrome (essential for armour) from Turkey and so on - with gold, hard currency or industrial produce.

The nazis kept a very strict price and wage regulation and set interest rates high to ensure a low inflation, despite printing a lot of reichsmark (not just MEFOs). Basically they ran a massive inflation and tried to use bayonets to keep prices from rising. The system was about to implode when the war came and they could enact all sorts of measures to prevent it (rationing, for example).

Weimar Germany had kept, expecting a British blockade in case of a new conflict, a law that forced all factories to keep 6-18 months worth of raw materials stockpiled, a law that was abolished by the nazis and allowed companies to burn through this reserve, granting a temporary boost.

The nazis burned through the German gold and currency reserve and all assets seized from Jews and other "undesirables" and defaulted on all foreign loans by 1939 (refusing to pay them back or pay interests on them). During 1936, the German gold reserve fell from $33 133 000 to $26 707 000, despite all these schemes and siezed assets.

The Germans seized the Austrian gold reserve in March 1938, yet at the end of 1938, Hjalmar Schacht reported to Hitler that all currency and gold reserves had been exhausted, that 6 billion MEFO bills could not be honoured by the government and that re-armament would have to be cut by 20-30%, or Germany was bankrupt. Hitler promptly sacked Schacht in January 1939.

German unemployment was slashed by ending the work programs, restarting them as public projects and hiring all that had been working in the work programs, for the same pay as their work program benefits. "Undesirables" (Jews, Roma, Poles, Socialists and so on) were fired from all public positions and companies were pressured to fire their "undesirables" or forfeit government contracts. Germans were hired instead. "Undesirables" were removed from the unemplyment statistics, as were married women. Finally, with the re-introduction of conscription in 1935, 1,5 million men were called into the armed forces, further reducing unemployment.

The Czechoslovak gold reserve was seized in 1939, and the parts that had been stored in foreign banks were delivered to the nazis from the Bank of England in April-September 1939. The nazis also took over the Free State of Danzig's gold reserve in September 1939, and plundered sizable amounts of gold from the central banks of Belgium and Netherlands.

The Germans set the exchange rate of the reichsmark at about three times as high towards the French Franc as it had been 1930 and thus plundered the French economy (German soldiers were amazed at what prices the German occupation forced the French traders and merchants to sell them French goods) systematically. They did the same in Belgium and the Netherlands.

To total things, stolen gold:

• Austria and Czechoslovakia: $146 000 000 in gold.

• Free State of Danzig: $4 000 000 in gold.

• Poland: The gold was evacuated through Romania, Turkey and Lebanon to France and then to French West Africa and then to the USA.

• Denmark: Had almost all their gold in Britain and USA.

• Norway: Managed to evacuate their gold to Britain.

• The Netherlands: $163 000 000 in gold.

• Belgium: $269 000 000 in gold. This gold was, like the Polish evacuated to Dakar, but were delivered to Germany 1940-42.

• Luxembourg: $4 857 832 in gold, evacuated to France and taken in the port of Marseilles, awaiting transport.

• Yugoslavia: $69 000 000 in gold.

• Greece: $28 000 000 in gold (it is hard to confirm that this really was seized by the Germans, but some sources indicate it).

In addition to this, Germany took over the administration of the gold reserves of Slovakia, Bulgaria, Hungary and Romania, a total of $200 000 000, of which none of those countries ever saw any of again.

In addition, the occupied countries were forced to pay for their own occupation in manufactured goods and other assets, a total of $33 735 000 were siezed this way.

Once the smaller axis countries were in bed with Germany, Germany started paying for raw materials purchases in paper reichsmarks while at the same time heavily restricting what those countries were allowed to buy from Germany in return. Romania held sizable assets of reichsmarks and desperately needed modern arms, but deliveries were not forthcoming.

In 1939 (including Austria and the Sudet), the Germans had a debt of roughly $100 billion and a GDP of $51,6 billion or about 194% of GDP and had a state income of $15 billion and state expenditures of $30 billion.

The Germans "economical miracle" consisted of wild out of control spending - in 1939, the Germans spent 30% of GDP on their armed forces. It was completely unsustainable.