Chile's mines minister says an attempt to rescue 33 trapped miners will begin in the second half of October - earlier than previously predicted.

Laurence Golborne said the drilling of a rescue shaft to bring the men to the surface was going extremely well and would be completed by 15 October.

It will then take several days before rescue capsules can be lowered to the miners, 700m (2,300ft) below ground.

Gideon Long reports.