|
From The Engineer - News:
An 'unconventional' drilling method is expected to bore the escape hole for the 33 miners trapped in a San Jose copper mine in northern Chile, according to an industry expert.
Dr Andrew Wetherelt, a senior lecturer in mining engineering at the University of Exeter, said Chile's state-owned Codelco mining company is planning on using a massive Strata 950 'raise boring' drill to carve a hole 66cm wide to reach the miners trapped under solid rock 700m below the surface.
Read the whole article
| 
Re: 'Unconventional' Drilling Could Free Trapped Chilean Miners
