When you work in a special education environment as a learning behavior specialist, no two studentsânor two daysâare the same. Every day is a new day for students with disabilities, and for their instructors.
Drilling began on 24 May 1970 using the Uralmash-4E, and later the Uralmash-15000 series drilling rig. Boreholes were drilled by branching from a central hole. The deepest, SG-3, reached 12,262 metres (40,230 ft) in 1989 and still is the deepest artificial point on Earth. The borehole is 9 inches (23 cm) in diameter. In terms of true depth, it is the deepest borehole in the world.
top 10 amazing movie makeup transformations the deepest hole ever drilled is the kola superdeep borehole on the kola peninsula in the northwest corner of russia located near finland it was drilled for scientific research by the ussr