Tomka gas test site

Tomka gas test site was a secret chemical weapons testing facility near a place codenamed Volsk-18, 20 km off Volsk, now Shikhany, Saratov Oblast, Russia created within the framework of German-Soviet military cooperation to circumvent the demilitarization provisions of the post-World War I Treaty of Versailles. It was co-directed by Yakov Moiseevich Fishman, and German chemists Alexander von Grundherr and Ludwig von Sicherer. It operated during 1926-1933.
After 1933 the area was used by the Red Army and expanded under the name "Volsk-18" or "Schichany-2" to Russia's most important center for the development of chemical warfare agents and protective measures against NBC weapons.
Another chemical site was established by the settlement of Ukhtomsky, Moscow Region.