Teck said late last week that the mine had resumed production April 8 on the approval of a new ratified five-year deal. It replaces an agreement which expired October 31, 2010.

Terms were not disclosed.

The British Columbian operation’s 700-plus workers had been on strike since January 30, when the Local 9346 of the United Steelworkers of America took strike action that suspended production.

A previous deal presented to workers was voted down last month.

"We are pleased to have reached a successful conclusion to our negotiations and look forward to resuming normal operations at Elkview," operations and engineering vice-president Bill Fleming said.

In March, Teck said it had cut its whole-year coal production guidance by about 1 million tonnes because of the strike as well as harsh winter weather conditions.

Teck now expects coal sales in 2011 to be 23.5-24.5Mt, versus a previous annual outlook of 24.5-25.5Mt.

Due to the lower volumes, Teck also said its unit mining cost of product sold would now be $C63-67 per tonne for the whole year and $77-80/t in the first quarter.

Teck owns a 95% partnership interest in the Elkview mine, located near Sparwood in southeastern British Columbia. The remaining 5% is held equally by Nippon Steel Corporation and Posco.