Reaching The Mantle
They were able to reach a depth of more than 600 feet. Project Mohole, on the other hand, was eventually shelved eight years after its funding was cut. The Americans were unsuccessful in their search for the mantle.
The Soviets
After that, it was up to the Soviets to try their luck. A team of scientists began drilling into the crust beneath the Pechengsky District. It was a different strategy than what the original researchers had taken.