"To the Deputy People's Commissar of Armament, comrade Mirzakhanov
CC: factory #8 director, Major-General of the Artillery Engineering Service, comrade Fratkin
During trials of the SU-100 at Uralmash, two 100 mm 52-PS-412U guns mod. 1944 ##A1966 and 2506 were damaged by impact on tree trunks and require repair at the factory.
The elevation mechanism cover bolts of gun #A1966 were torn off, the turning mechanism was bent, and the elevation mechanism works unevenly.
The travel lock on gun #2506 was bent, and the elevation mechanism works unevenly.
The guns were removed and are now at the Uralmash factory.
I ask you to order the director of factory #8 to repair the guns, paid for by GBTU. Present the bill to the financial department of the Armoured and Motorized Forces, Moscow, Red Square #2, NKO building.
GBTU USA Chief, Major-General of the Tank Engineering Service, Alymov
Chief of the 2nd Department of the GBTU USA, Engineer-Colonel Kupriyanov"
CAMD RF 38-11369-53