The first tanks suffered several engineering problems. The view slits were too thin to see out of properly. The noise from the engine and the excessive heat and choking exhaust fumes were too much for the crews inside to operate safely. There was also fear that the heat from the engine might ignite the fuel. They also had trouble with mud accumulating in their threads. On September 29th, a meeting took place in London that recommended new specifications for the tank. They wanted it to have 10-mm frontal armor and 8-mm side armor. There would be a crew of eight and the large guns would be 57-mm naval guns mounted on the sides. Moreover, it should still be able to maintain a speed of 4 mph. These thirty-ton machines could
