Competitor from the Bottom Floor
In February of 1942, artillery production from the Ural Heavy Machinebuilding Factory (UZTM) was transferred to factory #8, which was evacuated in the fall of 1941 from Kaliningrad (modern day Korolev) to Sverdlovsk. The factory director was B.A. Fradkin, same as before the evacuation. F.F. Petrov was appointed chief engineer of the new factory.
New developments of the factory #8 design bureau received the index ZIK (Zavod Imeni Kalinina, Kalinin factory). The first product of the newly minted design bureau was the ZIK-1 85 mm gun for installation in the T-34 and KV-1. Various tank and anti-tank guns bore the ZIK index, as well as howitzers, Supreme Command Reserve artillery, and SPGs. It just so happened that no ZIK project was ever accepted into service, but it would be incorrect to say that Petrov's designers worked for nothing. Factory #8 design bureau's works, including the D-1 howitzer, were later brought to life by the factory #9 design bureau, formed in the fall of 1942.