What is the Farthest any one has ever gone underground?

Question

Any human to be specific :)
plz answer

Answer 1

The Russians have gone over 4.8 miles down.
The project was first proposed in 1962 and was assigned to the Interdepartmental Scientific Council for the Study of the Earth's Interior and Superdeep Drill. The Russians stopped drilling when it got too hot 180 °C (356 °F), but they expect to continue to a final depth of 1,500 meters with an expected temperature at 300 °C (572 °F).

The deepest any human being has gone down is 3,774 meters (1.48 miles) in South Africa.

According to Wikipedia: http://en.wikipedia.org/wiki/Mining#Records
"The deepest mine in the world: Savuka Mine in the North West Province, South Africa at 3,774 meters.

The deepest borehole in the world: Kola Superdeep Borehole at 12,262 meters (4.8157 miles). This, however, is not a matter of mining but rather related to scientific drilling."

According to Wikipedia: http://en.wikipedia.org/wiki/Kola_Superdeep_Borehole
"The Kola Superdeep Borehole (KSDB) was the result of a scientific drilling project of the former USSR. The project attempted to drill as deep as possible into the Earth's crust. Drilling began on May 24, 1970 on the Kola Peninsula, using an "Uralmash-4E" and later an "Uralmash-15000" drilling device. A number of boreholes were drilled by branching from a central hole. The deepest, SG-3, was completed in 1989, creating a hole 12,262 metres (7.6 mi) deep, the deepest hole ever made by humans...

It was decided to drill again from 7,000 metres (22,970 ft)[3]. The hole reached 12,262 metres (40,230 ft) deep in 1989. In that year the hole depth was expected to reach 13,500 metres (44,290 ft) by the end of 1990 and 15,000 metres (49,210 ft) by 1993. However, due to higher than expected temperatures at this depth and location, 180 °C (356 °F) instead of expected 100 °C (212 °F), drilling deeper was deemed infeasible and the drilling was stopped in 1992. With the expected further increase in temperature with increasing depth, drilling to 15,000 metres (49,210 ft) would have meant working at a projected 300 °C (572 °F), at which the drill bit would no longer work."

Answer 2

The deepest mine in the world: Savuka Mine in the North West Province, South Africa at 3,774 meters.