The murder factories at Sobibor were built by the Nazis during World War II. Specifically, they were built by the SS (Schutzstaffel) as part of Operation Reinhard, the plan to exterminate Jews in occupied Poland. The camp at Sobibor was one of the three main extermination camps established by the Nazis for this purpose, along with Belzec and Treblinka. These camps were responsible for the deaths of hundreds of thousands of Jews. **

Yes, there was a real uprising at Sobibor extermination camp during World War II. On October 14, 1943, Jewish prisoners led by Alexander Pechersky staged a revolt, resulting in the escape of around 300 prisoners. This uprising was one of the few successful revolts in a Nazi extermination camp and is a testament to the resilience and bravery of those who fought against the horrors of the Holocaust. **

The death factories at Sobibor were built by the Nazis during World War II. The construction and operation of the extermination camp were overseen by the SS, particularly by SS-Obersturmführer Richard Thomalla and SS-Obersturmführer Gustav Wagner. These individuals were responsible for the planning and implementation of the camp's infrastructure, including the gas chambers and crematoria used to systematically murder thousands of people, primarily Jews, at Sobibor. **

Yes, there were uprisings at concentration and extermination camps during the Holocaust, including the uprising at Sobibor. In October 1943, prisoners at Sobibor, led by Alexander Pechersky, staged a revolt, resulting in the escape of around 300 prisoners. This uprising was one of the most successful revolts in a Nazi camp during World War II and led to the closure of the Sobibor camp. The bravery and determination of the prisoners at Sobibor and other camps demonstrate the resilience and resistance of those who were subjected to the horrors of the Holocaust. **

To apply a new waterproofing membrane on top of an old bitumen waterproofing membrane, the surface of the old membrane should be thoroughly cleaned and prepared. Any loose debris, dirt, or old adhesive should be removed to ensure proper adhesion of the new membrane. Once the surface is clean, a primer should be applied to promote adhesion between the old and new membranes. Finally, the new waterproofing membrane can be installed according to the manufacturer's instructions, ensuring that it is properly sealed and bonded to the old membrane to provide effective waterproofing. **

A utility knife or a sharp blade is typically used to cut the waterproofing membrane. It is important to use a sharp tool to ensure clean and precise cuts, which will help in achieving a proper seal and prevent water leakage. Care should be taken to avoid damaging the underlying surface while cutting the membrane. **

Yes, the escape from Sobibor and the film Grey Zone are both based on true events. The escape from Sobibor was a mass escape of prisoners from the Sobibor extermination camp in German-occupied Poland during World War II. The film Grey Zone is based on the book "The Grey Zone: A Report from the Auschwitz Sonderkommando" by Dr. Miklós Nyiszli, a Hungarian Jewish prisoner who was forced to work as a doctor in the Auschwitz concentration camp. Both the escape from Sobibor and the events depicted in Grey Zone are based on historical accounts and survivor testimonies. **

Ideally, the waterproofing membrane should be applied in dry weather to ensure proper adhesion and effectiveness. If the membrane is applied and then it rains before it has fully cured, it can compromise its ability to create a watertight seal. Water exposure during the curing process can lead to delamination, reduced adhesion, and potential leaks. Therefore, it is best to apply the waterproofing membrane when there is no rain in the forecast and allow it to fully cure before any water exposure. **