Using the gas in executions in the United States is ... The newspaper also reported that the state was buying chemicals that could form Zyklon B. That news prompted an immediate outcry locally ...

When the crystals dissolved in air, they created a lethal gas. Block 11, the most feared location in Auschwitz, was chosen for the first Zyklon B experiments. On a day in late August or early ...

Since the autumn of 1941, Höss and his colleagues had been experimenting with the use of Zyklon B to kill Soviet POWs ... He put on a gas mask, opened a hatch, and dropped the crystals in.” ...