A Dig Towards the Core of the Earth Uncovers a Lot of Scientific Secrets

Specialized equipment

The Russian team used specialist equipment in their project. Drilling was done using the Uralmash-4E, which was a serial drilling rig used to drill oil wells. This rig was modified a bit to be able to reach a depth of 7,000 meters.

Source: ResearchGate

Throughout the project, the Soviet team developed instruments that would help them take direct physical measurements at the bottom of the borehole. Because of this, they had greater measurement integrity. In 1974, the team upgraded to an Uralmash-15000.