THE RUDOLF REPORT

7. ZYKLON B FOR THE KILLING OF HUMAN BEINGSdiffering in efficiency: one air exchange every 6, 12, 24 and 96 minutes.480 A few average values are listed in Table 11, taken from the individualscenarios. The value for 5g/m 3 indicates, when the HCN concentrationfalls below a value at which it is possible to enter the chamberwith a gas mask, but without protective garment and without performingphysical work. The value for 2g/m 3 should lie in the vicinityof a value permitting light physical work with a gas mask, but withoutprotective garment. The value for 0.1g/m 3 indicates when the HCNconcentration falls below a concentration permitting entry of thechamber without a gas mask and without any health hazard. The columnwith the heading “∫c(t) dt/10g/m 3 ” finally corresponds to a tenth ofthe surface area under the particular curve. The value corresponds tothe duration of a hypothetical gassing of a chamber with a constant10g/m 3 HCN, when the hydrogen cyanide suddenly rises at the beginningof this period of time and then suddenly disappears at the end ofthis period. These values can now be used for simulation calculations;see next chapter.The 6 min/air exchange applies in the absence of a short circuit ofthe air in the chamber. The 12 min/air exchange corresponds to thisnecessary correction. Both cases assume an empty chamber. In fact,the ventilation of the intermediate area between the hundreds of bodies480 For those who wish to see it written out:a. Equation for release of HCN from the carrier material (in fractions):A(t) = e –t/a– in which t = time after the initial release of HCN in minutes– in which a = 43.5/minutes (so as to attain the velocity and low atmospheric humidityat 15°C alleged by Irmscher, note 427)b. Equation for the reduction of the HCN content through ventilation:B(t) = e –t/b– in which b = necessary time for a single air exchange of the room in question.c. Equation for the actual HCN content:i. For the first 10 minutes (no ventilation, only release of HCN):C1(t)=(1-A(t))×D– in which D = e/f– in which e = mass of Zyklon B introduced in grams)– in which f = volume of the chambers = 430 m³ (net volume, without the volumetaken up by the victims)– e has been selected so as to attain a concentration of approximately 10g/m³ after 10minutes. For the sake of simplicity, I have used 20 kg = 20,000 g .ii. Differential equation for the actual HCN content for times after 10 minutes, i.e., withventilation, iteratively resolved into one minute steps:C2(t+1)=C2(t)×e –1/b +(A(t))-A(t+1))×D– in which (A(t))-A(t+1))×D is the quantity of HCN evaporating from the carrierwith each new minute.225