The "Luftwaffe" returned to attack the repair workshops over two subsequent nights with a force of 300 bombers. During repeated attacks between 4 and 22 June, all of the plant's 50 buildings, 9,000 metres of conveyors, 5,900 units of process equipment and 8,000 engines were destroyed or damaged. Russian authorities have still not disclosed how many people were killed. German wartime estimates are 15,000, but are not supported. Owing to failed intelligence and targeting, the attacks against the Molotov factory disrupted the T-70 light tank. Roughly half of the Soviet light tank production—5, 134 from 9, 375 in 1942, was made there. Factory Number 112, produced the T-34 tank, which was only lightly affected by the raids. Repair was rapid, and completed within six weeks. Night fighter and search light defences were also increased. The factory was fully operational by 18 August. In the fourth quarter of 1943, it superseded production quotas by 121 percent. Factory Number 112 went on to produce 2,851 T-34s in 1943 and 3, 619 in 1944 up from 2, 718 in 1942. The He 111 units dropped 1,015 tons of bombs in total, losing only six aircraft, through the Soviets claimed 145.