Canada-based Goldcorp has completed construction of the first sulphide process line at its Penasquito project in Zacatecas, Mexico, with commercial production scheduled to begin in January 2010.

The line’s primary crusher has filled the coarse ore stockpile with 230,000t of crushed ore in preparation for initial milling.

Construction of the second sulphide process line is underway and is expected to be completed in the third quarter of 2010.

Throughput is expected to reach 130,000t in the fourth quarter of 2010.

The project, with current daily mining rate of more than 500,000t, has yielded more sulphide ore than was expected resulting in stockpile of 4.2 million tonnes ahead of the primary crusher, Goldcorp said.