Vancouver-based Fortuna Silver Mines Inc. said Wednesday it expects commercial production from a Mexican mine to beging Sept. 1.

The company's wholly owned San Jose silver and gold mine, which has been in operation since July 15, is in a balancing phase that is expected to continue through this month.

"Commercial production will be declared when operating performance is within 80 percent of design parameters for throughput and recovery," Fortuna said in a news release. "The start-up and balancing phase to date has been progressing as planned and Management anticipates commercial production to commence on Sept. 1.

Fortuna's primary assets are the Caylloma silver mine in southern Peru and the San Jose silver-gold mine in Mexico.